• We have a 100 watt light bulb using .83
amps of power per second.
– How many volts does it require?
– Volts = watts divi...
• RED SLIDE: These are notes that are very
important and should be recorded in your
science journal.
Copyright © 2010 Ryan...
-Nice neat notes that are legible and use indentations
when appropriate.
-Example of indent.
-Skip a line between topics
-...
• RED SLIDE: These are notes that are very
important and should be recorded in your
science journal.
• BLACK SLIDE: Pay at...
 New Area of Focus, Electricity and
Magnetism
Copyright © 2010 Ryan P. Murphy
• What would life be like without electricity?
Copyright © 2010 Ryan P. Murphy
• Much different than it is for most of us.
• Much different than it is for most of us.
• Video Link! Nikola Tesla… Hank explains
great minds.
– Preview for language.
– http://www.youtube.com/watch?v=pPnGvjmIgZA
• Does somebody want to try and define the
word electricity?
• There is no single definition called
"electricity."
Copyright © 2010 Ryan P. Murphy
• There is no single definition called
"electricity."
• ELECTRICITY DOES NOT EXIST
Copyright © 2010 Ryan P. Murphy
• Electricity is a variety of independent
science concepts all with one single name.
Copyright © 2010 Ryan P. Murphy
• These are the questions and definitions we need to know
to generate a definition for electricity?
– What is electric cha...
• These are the questions and definitions we need to know
to generate a definition for electricity?
– What is electric cha...
 Electricity is related to charges, and both
electrons (-) and protons (+) carry a
charge.
Copyright © 2010 Ryan P. Murphy
• We will skip most of the atomic information.
– We will examine circuits and static charges for
this unit.
Copyright © 20...
• Electrons are negatively charged
Copyright © 2010 Ryan P. Murphy
• Electrons are negatively charged
Copyright © 2010 Ryan P. Murphy
• Electrons are negatively charged
• Protons (nucleus) are positively charged
Copyright © 2010 Ryan P. Murphy
• Electrons are negatively charged
• Protons (nucleus) are positively charged
Copyright © 2010 Ryan P. Murphy
• Electrons are negatively charged
• Protons (nucleus) are positively charged
Copyright © 2010 Ryan P. Murphy
• Electrons are negatively charged
• Protons (nucleus) are positively charged
• Their charges are about equal
Copyright © ...
• Electrons are negatively charged
• Protons (nucleus) are positively charged
• Add Electrons – Atom becomes more
negative...
• Electrons are negatively charged
• Protons (nucleus) are positively charged
• Take away (strip) electrons then the atom
...
• Annoying Tape.
– Teacher gives each student 2 long pieces (10
centimeters each) strips of clear tape.
• Make non-stick h...
• Annoying Tape.
– Teacher gives each student 2 long pieces (10
centimeters each) strips of clear tape.
• Make non-stick h...
• Annoying Tape.
– Teacher gives each student 2 long pieces (10
centimeters each) strips of clear tape.
• Make non-stick h...
• What happened!
• What happened!
– When you removed the tape from the table you
gave it an electrical charge. When you peeled
the tape apa...
• What happened!
– When you removed the tape from the table you
gave it an electrical charge. When you peeled
the tape apa...
• Annoying Tape.
– Teacher gives each student 2 long pieces (10
centimeters each) strips of clear tape.
• Make non-stick h...
• Annoying Tape.
– Teacher gives each student 2 long pieces (10
centimeters each) strips of clear tape.
• Make non-stick h...
• What happened?
• What happened?
– Each piece of tape gained a negative charge
when removed from the table. When they were
brought close t...
• What happened?
– Each piece of tape gained a negative charge
when removed from the table. When they were
brought close t...
• Life occurs because of electrostatic charges.
• Life occurs because of electrostatic charges.
• Without them, life would simple unravel.
• Life occurs because of electrostatic charges.
• Without them, life would simple unravel.
Electricity. Learn more at…
htt...
• Electricity Available Sheet
 Lightning is a big spark that occurs when
electrons move from one place to another
very quickly because of the unequal
d...
• Electricity Available Sheet
• Electricity Available Sheet
 Electric Fields: The funky area near any
electrically-charged object.
 Replace electrostatic for funky.
Copyright © 201...
 Electric Fields: The funky area near any
electrically-charged object.
 Replace electrostatic for funky.
Copyright © 201...
 Electric Fields: The funky area near any
electrically-charged object.
 Replace electrostatic for funky.
Copyright © 201...
• Visit a magnetic field simulator.
http://phet.colorado.edu/en/simulation/mag
nets-and-electromagnets
Copyright © 2010 Ryan P. Murphy
 Opposite charges attract.
Copyright © 2010 Ryan P. Murphy
 Opposite charges attract.
Copyright © 2010 Ryan P. Murphy
 The Same forces repel.
Copyright © 2010 Ryan P. Murphy
 The Same forces repel.
Copyright © 2010 Ryan P. Murphy
• Which one is right and which is wrong?
Copyright © 2010 Ryan P. Murphy
• Which one is right and which is wrong?
• Answer: They are both wrong.
Copyright © 2010 Ryan P. Murphy
• Which one is right and which is wrong?
• Answer: They are both wrong.
Copyright © 2010 Ryan P. Murphy
• Which one is right and which is wrong?
• Answer: They are both wrong.
Copyright © 2010 Ryan P. Murphy
• Which one is right and which is wrong?
• Answer: They are both wrong.
Copyright © 2010 Ryan P. Murphy
• Which one is right and which is wrong?
• Answer: They are both wrong.
Copyright © 2010 Ryan P. Murphy
• Which one is right and which is wrong?
• Answer: They are both wrong.
Copyright © 2010 Ryan P. Murphy
• Which one is right and which is wrong?
• Answer: Now they’re both right.
Copyright © 2010 Ryan P. Murphy
• Activity Simulation. Magnetic Field Hockey
• http://phet.colorado.edu/en/simulation/electr
ic-hockey
Reminder to teacher to reset
the arrows!
• Magnet: An object that is surrounded by a
magnetic field and that has the property,
either natural or induced, of attrac...
• Magnet: An object that is surrounded by a
magnetic field and that has the property,
either natural or induced, of attrac...
• Magnet: An object that is surrounded by a
magnetic field and that has the property,
either natural or induced, of attrac...
• Activity! Fun with Magnets for 2:39
seconds then we are moving on.
– The class can earn additional “play time” with
good...
• Activity! Fun with Magnets for 2:39
seconds then we are moving on.
– The class can earn additional “play time” with
good...
• Ferrofluids Video Link! (Optional)
– http://www.youtube.com/watch?v=kL8R8SfuXp
8&feature=related
• Activity. The Fonz
– Try and pick up paper hole punches with a
plastic comb.
– Next run the comb through your hair and o...
 Static Electricity: The imbalance of positive
and negative charges.
Copyright © 2010 Ryan P. Murphy
• Activity Simulation. John Travoltage.
• http://phet.colorado.edu/en/simulation/trav
oltage Static Charge
• Activity- Bad Hair Day Demonstration.
– Rub balloon all around your head.
– Question: Why does this happen?
Copyright © ...
• Answer!
– Electrons from your body move into the balloon.
– This gives you a positive charge.
– Your hair is also positi...
• Answer!
– Electrons from your body move into the balloon.
– This gives you a positive charge.
– Your hair is also positi...
• Answer!
– Electrons from your body move into the balloon.
– This gives you a positive charge.
– Your hair is also positi...
• Answer!
– Electrons from your body move into the balloon.
– This gives you a positive charge.
– Your hair is also positi...
• Electricity Available Sheet
• Demonstration - Static Electricity
– Observe two balloons without a build up of a
charge.
Copyright © 2010 Ryan P. Murphy
• Demonstration - Static Electricity
– Observe two balloons without a build up of a
charge.
– Now rub balloons on head / c...
• Demonstration - Static Electricity
– Observe two balloons without a build up of a
charge.
– Now rub balloons on head / c...
• Demonstration - Static Electricity
– Observe two balloons without a build up of a
charge.
– Now rub balloons on head / c...
• Demonstration - Static Electricity
– Observe two balloons without a build up of a
charge.
– Now rub balloons on head / c...
• Demonstration - Static Electricity
– Observe two balloons without a build up of a
charge.
– Now rub balloons on head / c...
• Demonstration - Static Electricity
– Observe two balloons without a build up of a
charge.
– Now rub balloons on head / c...
• Activity! Static Balloons
Copyright © 2010 Ryan P. Murphy
• Activity! Static Balloons
– Blow up a balloon and tie it off.
Copyright © 2010 Ryan P. Murphy
• Activity! Static Balloons
– Blow up a balloon and tie it off.
– Write name on it with soft pen.
Copyright © 2010 Ryan P....
• Activity! Static Balloons
– Blow up a balloon and tie it off.
– Write name on it with soft pen.
– Rub balloon against ha...
• Activity! Static Balloons
– Blow up a balloon and tie it off.
– Write name on it with soft pen.
– Rub balloon against ha...
• Answer to wall sticking balloon.
• Answer to wall sticking balloon.
– Electrons from hair are removed and put into balloon.
• Answer to wall sticking balloon.
– Electrons from hair are removed and put into balloon.
– Balloon has slight negative c...
• Answer to wall sticking balloon.
– Electrons from hair are removed and put into balloon.
– Balloon has slight negative c...
• Answer to wall sticking balloon.
– Electrons from hair are removed and put into balloon.
– Balloon has slight negative c...
• Activity Simulator. Balloons Explained
• http://phet.colorado.edu/en/simulation/ballo
ons
• We usually only
notice static
electricity in the
winter when the air
is very dry.
• We usually only
notice static
electricity in the
winter when the air
is very dry. During
the summer, the air
is more hum...
• We usually only
notice static
electricity in the
winter when the air
is very dry. During
the summer, the air
is more hum...
• Demonstration Static Electricity
• Set-up below and move balloon around cup.
• What happened? Balloon gained electrons
from rubbing (
• What happened? Balloon gained electrons
from rubbing (now more negative). The
match is neutral and is attracted to the
n...
• What happened? Balloon gained electrons
from rubbing (now more negative). The
match is neutral and is attracted to the
n...
• What happened? Balloon gained electrons
from rubbing (now more negative). The
match is neutral and is attracted to the
n...
• Electricity Available Sheet
• Activities Van de Graaff generator
• Please read safety and operation
precautions on this link.
– http://hypertextbook.c...
• Activity: Van de Graaff Generator – Creates
unequal distribution of electrons.
– Describe two demonstrations in journal ...
• Activity: Van de Graaff Generator – Creates
unequal distribution of electrons.
– Describe two demonstrations in journal ...
• Demonstration
– Take top off of generator to see its inner
workings.
Copyright © 2010 Ryan P. Murphy
• Video! How a Van de Graaff Generator works.
– http://www.youtube.com/watch?v=I2G0IdTWG
QU
• Tape a tack to the top of the generator.
–Can we hear the corona discharge.
Metal Thumbtack
Copyright © 2010 Ryan P. Mur...
• Demonstration 1 – Using the magic wand
and seeing the spark
Copyright © 2010 Ryan P. Murphy
Tinsel
• Demonstration 2: Packing peanuts.
– Put some packing peanuts in a plastic cup
and tape it to the top of the generator.
–...
• Demonstration 3 – Bad Hair day.
– One student to stand on plastic trash barrel.
– Put both hands on generator.
– Turn it...
• Demonstration 3 – Bad Hair day.
– One student to stand on plastic trash barrel.
– Put both hands on generator.
– Turn it...
• Demonstration 3 – Bad Hair day.
– One student to stand on plastic trash barrel.
– Put both hands on generator.
– Turn it...
• Demonstration 3 – Bad Hair day.
– One student to stand on plastic trash barrel.
– Put both hands on generator.
– Turn it...
• Demonstration 3 – Bad Hair day.
– One student to stand on plastic trash barrel.
– Put both hands on generator.
– Turn it...
• Demonstration 4:
– A small balloon attached to the generator by a
string taped to the globe will be charged to the
same ...
• Tape a bent paper clips that points out from
the generator. Look for ion beam (charged
winds).
– This beam can charge di...
• Demonstration 5: A fluorescent light.
• Bulb will light up if close to the generator.
Copyright © 2010 Ryan P. Murphy
• Demonstration 6 – Smoke or chalk dust.
Copyright © 2010 Ryan P. Murphy
• Other Demonstrations:
– Blow bubbles near the generator.
– Place aluminum pie plate on generator in
stack.
– Light a can...
• Video! If you don’t have a Van de Graaff
Generator.
– http://www.youtube.com/watch?v=hh8PqQDOAb8
• Coulombs Law: Any two charged objects will
create a force on each other. Opposite
charges will produce an attractive for...
• Coulombs Law: Any two charged objects will
create a force on each other. Opposite
charges will produce an attractive for...
• Coulombs Law: Any two charged objects will
create a force on each other. Opposite
charges will produce an attractive for...
• Coulombs Law: Any two charged objects will
create a force on each other. Opposite
charges will produce an attractive for...
• Coulombs Law: Any two charged objects will
create a force on each other. Opposite
charges will produce an attractive for...
• Coulombs Law: Any two charged objects will
create a force on each other. Opposite
charges will produce an attractive for...
• Coulombs Law: Any two charged objects will
create a force on each other. Opposite
charges will produce an attractive for...
 Coulombs Law:
 The greater the charges, the greater the
force.
 Coulombs Law:
 The greater the charges, the greater the
force.
 Coulombs Law:
 The greater the charges, the greater the
force.
 The greater the distance between them, the
smaller the...
• Video Link! Coulombs Law
– Be proactive, sketch some notes. If it gets a bit
advanced stay positive. (No worries here).
...
• Video Link! Coulombs Law
– Be proactive, sketch some notes. If it gets a bit
advanced stay positive. (No worries friend)...
• Electricity Available Sheet
• If your car gets struck by lightning in a
thunderstorm, will you be safe. Why?
• If your car gets struck by lightning in a
thunderstorm, will you be safe. Why?
• If your car gets struck by lightning in a
thunderstorm, will you be safe. Why?
• If your car gets struck by lightning in a
thunderstorm, will you be safe. Why? Yes
• Answer: You will be safe because your
cars metal chassis acts like a Faraday
Cage.
• Answer: You will be safe because your
cars metal chassis acts like a Faraday
Cage. The charged particles travel around
t...
• Answer: You will be safe because your
cars metal chassis acts like a Faraday
Cage. The charged particles travel around
t...
• Answer: You will be safe because your
cars metal chassis acts like a Faraday
Cage. The charged particles travel around
t...
• Answer: You will be safe because your
cars metal chassis acts like a Faraday
Cage. The charged particles travel around
t...
• Answer: You will be safe because your
cars metal chassis acts like a Faraday
Cage. The charged particles travel around
t...
• Answer: You will be safe because your
cars metal chassis acts like a Faraday
Cage. The charged particles travel around
t...
• A Faraday cage is a
metallic enclosure that
prevents the entry or
escape of an
electromagnetic field.
• A Faraday cage is a
metallic enclosure that
prevents the entry or
escape of an
electromagnetic field.
– For best perform...
• A Faraday cage is a
metallic enclosure that
prevents the entry or
escape of an
electromagnetic field.
– For best perform...
• Video Link. Human Faraday Cage.
• http://www.youtube.com/watch?v=Fyko81
WAvvQ
• Optional Activity! Teacher to make a
Faraday Cage wallet.
– Does a student have a cell phone that we can
place in the wa...
• Optional Activity! Teacher to make a
Faraday Cage wallet.
– Does a student have a cell phone that we can
place in the wa...
• Optional Activity! Teacher to make a
Faraday Cage wallet.
– Does a student have a cell phone that we can
place in the wa...
• Optional Activity! Teacher to make a
Faraday Cage wallet.
– Does a student have a cell phone that we can
place in the wa...
• Optional Activity! Teacher to make a
Faraday Cage wallet.
– Does a student have a cell phone that we can
place in the wa...
 Current: A flow of electrons, or individual
negative charges.
Copyright © 2010 Ryan P. Murphy
• The electrons have a mass (however small),
and when they move through the conductor,
there are collisions that produce h...
• Don’t over connect outlets because they
could short circuit.
Copyright © 2010 Ryan P. Murphy
• Electricity Available Sheet
 Conductors, Insulators, Semi-conductors:
How easily energy is transferred through
the object by the moving charge.
Copyr...
 Conductor: Electrons flow easily, semi
flows in the middle.
Copyright © 2010 Ryan P. Murphy
 Semi-conductor: Conductivity between
conductor and insulator (electronics use).
Copyright © 2010 Ryan P. Murphy
• Activity (Optional) Conductors using a
conductivity meter.
– Find one conductor and one insulator by roving
around the c...
 Insulator: Electrons do not flow easily.
Copyright © 2010 Ryan P. Murphy
• Activity Simulator Link: Semi-Conductors
• http://phet.colorado.edu/en/simulation/sem
iconductor
• How does a battery work?
– Electrochemical reaction
– The chemical reactions in the
battery causes a build up of
electro...
• How does a battery work?
– Electrochemical reaction
– The chemical reactions in the
battery causes a build up of
electro...
• How does a battery work?
– Electrochemical reaction
– The chemical reactions in the
battery causes a build up of
electro...
• How does a battery work?
– Electrochemical reaction
– The chemical reactions in the
battery causes a build up of
electro...
• How does a battery work?
– Electrochemical reaction
• How does a battery work?
– Electrochemical reaction
– The chemical reactions in the
battery causes a build up of
electro...
• How does a battery work?
– Electrochemical reaction
– The chemical reactions in the
battery causes a build up of
electro...
• How does a battery work?
– Electrochemical reaction
– The chemical reactions in the
battery causes a build up of
electro...
• How does a battery work?
– Electrochemical reaction
– The chemical reactions in the
battery causes a build up of
electro...
• Activity! (Optional) Lemon Battery
– Note: Not as easy it looks and this battery won’t
produce a lot of energy.
• Activity! (Optional) Lemon Battery
– Note: Not as easy it looks and this battery won’t
produce a lot of energy.
• Activity! (Optional) Lemon Battery
– Note: Not as easy it looks and this battery won’t
produce a lot of energy.
• Activity! (Optional) Lemon Battery
– Note: Not as easy it looks and this battery won’t
produce a lot of energy.
• Activity! (Optional) Lemon Battery
– Note: Not as easy it looks and this battery won’t
produce a lot of energy.
• Activity! (Optional) Lemon Battery
– Note: Not as easy it looks and this battery won’t
produce a lot of energy.
• Activity! (Optional) Lemon Battery
– Note: Not as easy it looks and this battery won’t
produce a lot of energy.
• Activity! (Optional) Lemon Battery
– Note: Not as easy it looks and this battery won’t
produce a lot of energy.
• Activity! (Optional) Lemon Battery
– Note: Not as easy it looks and this battery won’t
produce a lot of energy.
• Activity! (Optional) Lemon Battery
– Note: Not as easy it looks and this battery won’t
produce a lot of energy.
• Activity! (Optional) Lemon Battery
– Note: Not as easy it looks and this battery won’t
produce a lot of energy.
• Activity! (Optional) Lemon Battery
– Note: Not as easy it looks and this battery won’t
produce a lot of energy.
• Activity! (Optional) Lemon Battery
– Note: Not as easy it looks and this battery won’t
produce a lot of energy.
• Activity! (Optional) Lemon Battery
– Note: Not as easy it looks and this battery won’t
produce a lot of energy.
• Activity! (Optional) Lemon Battery
– Note: Not as easy it looks and this battery won’t
produce a lot of energy.
• Activity! (Optional) Lemon Battery
– Note: Not as easy it looks and this battery won’t
produce a lot of energy.
• Also works with film canisters, vinegar
(acetic acid), nails, and copper wire.
• Electricity Available Sheet
 There are two main kinds of electric current,
direct current (DC) and alternating current (AC).
Copyright © 2010 Ryan P....
 There are two main kinds of electric current,
direct current (DC) and alternating current (AC).
Copyright © 2010 Ryan P....
 There are two main kinds of electric current,
direct current (DC) and alternating current (AC).
Copyright © 2010 Ryan P....
 There are two main kinds of electric current,
direct current (DC) and alternating current (AC).
Copyright © 2010 Ryan P....
 (DC) Direct Current is a flow of charge
always in one direction.
 (Batteries)
Copyright © 2010 Ryan P. Murphy
 (AC) - Alternating Current is a flow of charge
back and forth, changing its direction many
times in one second.
 (Plugs...
• Advantages of AC
– Voltage can be raised or lowered
– More efficient over long distances
Copyright © 2010 Ryan P. Murphy
• Advantages of AC
– Voltage can be raised or lowered.
– More efficient over long distances
Copyright © 2010 Ryan P. Murphy
• Advantages of AC
– Voltage can be raised or lowered.
– More efficient over long distances.
Copyright © 2010 Ryan P. Murp...
• Rockin Quiz!
– This is your chance to rock it out in science class so
don’t just sit there. At least rock your head or t...
• Note: Many devices such as computers plug
into the wall (AC Current) but the AC current
is converted into DC Current to ...
• Note: Many devices such as computers plug
into the wall (AC Current) but the AC current
is converted into DC Current to ...
Thunderstruck - Play Now!
http://www.youtube.com/watch?v=v2AC41dglnM
“DC”
“Its one way!”
“AC”
“It Alternates!”
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Is this (AC) Alternating Current, or (DC)
Direct Current?
• Where do you find this strange device?
– What does it do?
• An electric meter or energy meter is a device
that measures the amount of electrical
energy consumed by a residence, bus...
• Video Link! Reading your meter at home.
• Optional:
– http://www.youtube.com/watch?v=k2ogwitaAh4
Using a Multimeter -
ht...
 Volt: A measure of the force or pressure
under which electricity flows.
 Ampere: A measure of how much current
moves through a wire in one second.
Copyright © 2010 Ryan P. Murphy
• Ampere: A measure of how much current
moves through a wire in one second.
– Basically, the larger the size of wire, the ...
• Where do your see these plugs?
– Why are they larger?
Copyright © 2010 Ryan P. Murphy
• Answer: The Plug to a dryer or stove is
much thicker than a standard outlet to
account for extra amps.
Copyright © 2010 ...
• Answer: The Plug to a dryer or stove is
much thicker than a standard outlet to
account for extra amps.
Copyright © 2010 ...
 Watt: The amount of electricity consumed
per second.
Copyright © 2010 Ryan P. Murphy
• A Watt is calculated by multiplying volts times
amps. Most household electrical usage is
billed in kilowatt hours, or th...
• Question? We have a small computer server
with a sticker that shows 2.5 amps. Given a
normal 120 Volt, 60 hz power sourc...
• Raise your hand if you have no clue because
you weren’t paying attention for that black
slide that discussed what a Watt...
• Raise your hand if you have no clue because
you weren’t paying attention for that black
slide that discussed what a Watt...
• Electricity Available Sheet
• Volts are a measure of the force or pressure
under which electricity flows.
• Volts are a measure of the force or pressure
under which electricity flows.
• Volts are a measure of the force or pressure
under which electricity flows.
• Amps are a measurement of the current flow...
• Volts are a measure of the force or pressure
under which electricity flows.
• Amps are a measurement of the current flow...
• Volts are a measure of the force or pressure
under which electricity flows.
• Amps are a measurement of the current flow...
• Volts are a measure of the force or pressure
under which electricity flows.
• Amps are a measurement of the current flow...
• Volts are a measure of the force or pressure
under which electricity flows.
• Amps are a measurement of the current flow...
Crazy things about to happen.
Which is the correct description of Watts?
Which is the correct description of Watts?
This is a
measurement
of electrical
power
created.
This is a
measure of
the for...
Which is the correct description of Watts?
This is a
measurement
of electrical
power
created.
This is a
measure of
the for...
Which is the correct description of Amps?
This is a
measurement
of electrical
power
created.
This is a
measure of
the forc...
Which is the correct description of Amps?
This is a
measurement
of electrical
power
created.
This is a
measure of
the forc...
Which is the correct description of Volts?
This is a
measurement
of electrical
power
created.
This is a
measure of
the for...
Which is the correct description of Volts?
This is a
measurement
of electrical
power
created.
This is a
measure of
the for...
• Volts are a measure of the force or pressure
under which electricity flows.
• Amps are a measurement of the current flow...
• Volts are a measure of the force or pressure
under which electricity flows.
• Amps are a measurement of the current flow...
Which is the correct description of Amps?
This is a
measurement
of electrical
power
created.
This is a
measurement
of the ...
Which is the correct description of Amps?
This is a
measurement
of electrical
power
created.
This is a
measurement
of the ...
Which is the correct description of Volts?
This is a
measurement
of electrical
power
created.
This is a
measurement
of the...
Which is the correct description of Volts?
This is a
measurement
of electrical
power
created.
This is a
measurement
of the...
Which is the correct description of Watts?
This is a
measurement
of electrical
power
created.
This is a
measurement
of the...
Which is the correct description of Watts?
This is a
measurement
of electrical
power
created.
This is a
measurement
of the...
atts
atts
atts
olts
atts
olts
atts
olts mps
atts
olts mps
atts
olts mps
atts
olts mps
How do you
find Watts?
atts
olts mps
How do you
find Watts?
atts
olts mps
How do you
find Watts?
atts
olts mps
How do you
find Amps?
atts
olts mps
How do you
find Amps?
atts
olts mps
How do you
find Amps?
atts
olts mps
How do you
find Volts?
atts
olts mps
How do you
find Volts?
atts
olts mps
How do you
find Volts?
• Please complete these questions on the
available sheet.
• A Watt is calculated by multiplying volts times
amps. Most household electrical usage is
billed in kilowatt hours, or th...
• A Watt is calculated by multiplying volts times
amps. Most household electrical usage is
billed in kilowatt hours, or th...
• Question? We have a small computer server
with a sticker that shows 2.5 amps. Given a
normal 120 Volt, 60 hz power sourc...
• Question? We have a small computer server
with a sticker that shows 2.5 amps. Given a
normal 120 Volt, 60 hz power sourc...
• Question? We have a small computer server
with a sticker that shows 2.5 amps. Given a
normal 120 Volt, 60 hz power sourc...
• Question? We have a small computer server
with a sticker that shows 2.5 amps. Given a
normal 120 Volt, 60 hz power sourc...
• Question? We have a small computer server
with a sticker that shows 2.5 amps. Given a
normal 120 Volt, 60 hz power sourc...
• Question? We have a small computer server
with a sticker that shows 2.5 amps. Given a
normal 120 Volt, 60 hz power sourc...
• Question? We have a small computer server
with a sticker that shows 2.5 amps. Given a
normal 120 Volt, 60 hz power sourc...
“Ahh, we have to
do it again.”
“We did it like ten
times already.”
• Please complete these questions on the
available sheet.
• Question? We have an electronic device
with a sticker that shows 5 amps. Given a
12 Volt battery power source, How many
...
• Question? We have an electronic device
with a sticker that shows 5 amps. Given a
12 Volt battery power source, How many
...
• Question? We have an electronic device
with a sticker that shows 5 amps. Given a
12 Volt battery power source, How many
...
• Question? We have an electronic device
with a sticker that shows 5 amps. Given a
12 Volt battery power source, How many
...
• Question? We have an electronic device
with a sticker that shows 5 amps. Given a
12 Volt battery power source, How many
...
• Please complete these questions on the
available sheet.
• We have a 60 watt light bulb using 5 amps
of power.
– How many volts does it require?
• We have a 60 watt light bulb using 5 amps
of power.
– How many volts does it require?
• We have a 60 watt light bulb using 5 amps
of power.
– How many volts does it require?
• We have a 60 watt light bulb using 5 amps
of power.
– How many volts does it require?
• We have a 60 watt light bulb using 5 amps
of power.
– How many volts does it require?
– Volts = watts divided by amps.
• We have a 60 watt light bulb using 5 amps
of power.
– How many volts does it require?
– Volts = watts divided by amps.
• We have a 60 watt light bulb using 5 amps
of power.
– How many volts does it require?
– Volts = watts divided by amps.
–...
• We have a 60 watt light bulb using 5 amps
of power.
– How many volts does it require?
– Volts = watts divided by amps.
–...
• Please complete these questions on the
available sheet.
• We have a 100 watt light bulb using .83
amps of power per second.
– How many volts does it require?
• We have a 100 watt light bulb using .83
amps of power per second.
– How many volts does it require?
• We have a 100 watt light bulb using .83
amps of power per second.
– How many volts does it require?
– Volts = watts divi...
• We have a 100 watt light bulb using .83
amps of power per second.
– How many volts does it require?
– Volts = watts divi...
• We have a 100 watt light bulb using .83
amps of power per second.
– How many volts does it require?
– Volts = watts divi...
• Use natural light instead of lightning.
Copyright © 2010 Ryan P. Murphy
• Energy efficient light bulbs
Copyright © 2010 Ryan P. Murphy
• Energy efficient light bulbs
– More lumens, less wasted heat, less energy.
Copyright © 2010 Ryan P. Murphy
• Please complete these questions on the
available sheet.
• A sample electrical panel uses 60 watts at
12 volts.
– How many amps does it require?
• A sample electrical panel uses 60 watts at
12 volts.
– How many amps does it require?
• A sample electrical panel uses 60 watts at
12 volts.
– How many amps does it require?
• A sample electrical panel uses 60 watts at
12 volts.
– How many amps does it require?
– amps = watts / volts
• A sample electrical panel uses 60 watts at
12 volts.
– How many amps does it require?
– amps = watts / volts
– amps = 60...
• A sample electrical panel uses 60 watts at
12 volts.
– How many amps does it require?
– amps = watts / volts
– amps = 60...
• A sample electrical panel uses 60 watts at
12 volts.
– How many amps does it require?
– amps = watts / volts
– amps = 60...
• Please complete these questions on the
available sheet.
Get music for last question at… (Napoleon Dynamite Dance
Song) http://www.youtube.com/watch?v=Nzor09DbYfY
Question? A computer uses 1.75
amps. Given a 50 volt power source, How
many watts does it require?:
Question? A computer uses 1.75
amps. Given a 50 volt power source, How
many watts does it require?:
watts = volts x amps
Question? A computer uses 1.75
amps. Given a 50 volt power source, How
many watts does it require?:
watts = volts x amps
Question? A computer uses 1.75
amps. Given a 50 volt power source, How
many watts does it require?:
watts = volts x amps
w...
Question? A computer uses 1.75
amps. Given a 50 volt power source, How
many watts does it require?:
watts = volts x amps
w...
Question? A computer uses 1.75
amps. Given a 50 volt power source, How
many watts does it require?:
watts = volts x amps
w...
• What’s a resistance?
 Resistance: Anything in an electrical
circuit that impedes the flow of current is
referred to as resistance.
Copyright ©...
 Resistance: Anything in an electrical
circuit that impedes the flow of current is
referred to as resistance.
Copyright ©...
• Volts are a measure of the force or pressure
under which electricity flows.
• Amps are a measurement of the current flow...
• Volts are a measure of the force or pressure
under which electricity flows.
• Amps are a measurement of the current flow...
Which is the correct description of Watts?
This is a
measurement
of electrical
power
created.
This is a
measurement
of the...
Which is the correct description of Watts?
This is a
measurement
of electrical
power
created.
This is a
measurement
of the...
Which is the correct description of Watts?
This is a
measurement
of electrical
power
created.
This is a
measurement
of the...
Which is the correct description of Watts?
This is a
measurement
of electrical
power
created.
This is a
measurement
of the...
Which is the correct description of Watts?
This is a
measurement
of electrical
power
created.
This is a
measurement
of the...
Which is the correct description of Watts?
This is a
measurement
of electrical
power
created.
This is a
measurement
of the...
Which is the correct description of Watts?
This is a
measurement
of electrical
power
created.
This is a
measurement
of the...
Which is the correct description of Watts?
This is a
measurement
of electrical
power
created.
This is a
measurement
of the...
Which is the correct description of Watts?
This is a
measurement
of electrical
power
created.
This is a
measurement
of the...
Which is the correct description of Watts?
This is a
measurement
of electrical
power
created.
This is a
measurement
of the...
• Volts are a measure of the force or pressure
under which electricity flows.
• Amps are a measurement of the current flow...
• Volts are a measure of the force or pressure
under which electricity flows.
• Amps are a measurement of the current flow...
Which is the correct description of Watts?
This is a
measurement
of the current
flow rate of
electrons
Anything in
an elec...
Which is the correct description of Watts?
This is a
measurement
of the current
flow rate of
electrons
Anything in
an elec...
Which is the correct description of Watts?
This is a
measurement
of the current
flow rate of
electrons
Anything in
an elec...
Which is the correct description of Watts?
This is a
measurement
of the current
flow rate of
electrons
Anything in
an elec...
Which is the correct description of Watts?
This is a
measurement
of the current
flow rate of
electrons
Anything in
an elec...
Which is the correct description of Watts?
This is a
measurement
of the current
flow rate of
electrons
Anything in
an elec...
Which is the correct description of Watts?
This is a
measurement
of the current
flow rate of
electrons
Anything in
an elec...
Which is the correct description of Watts?
This is a
measurement
of the current
flow rate of
electrons
Anything in
an elec...
Which is the correct description of Watts?
This is a
measurement
of the current
flow rate of
electrons
Anything in
an elec...
• Georg Simon Ohm (1789 –1854)
– Ohm found that there is a direct proportionality
between voltage applied across a conduct...
• Georg Simon Ohm (1789 –1854)
– Ohm found that there is a direct proportionality
between voltage applied across a conduct...
 Ohms: The measure of resistance in a
circuit to the flow of an electric current.
 The greater the ohm value the more di...
 Ohms: The measure of resistance in a
circuit to the flow of an electric current.
 The greater the ohm value the more di...
 Ohms: The measure of resistance in a
circuit to the flow of an electric current.
 The greater the ohm value the more di...
 Ohms: The measure of resistance in a
circuit to the flow of an electric current.
 The greater the ohm value the more di...
• Ohms: The measure of resistance in a
circuit to the flow of an electric current.
– The greater the ohm value the more di...
• Ohms: The measure of resistance in a
circuit to the flow of an electric current.
– The greater the ohm value the more di...
• Ohms: The measure of resistance in a
circuit to the flow of an electric current.
– The greater the ohm value the more di...
• Ohms: The measure of resistance in a
circuit to the flow of an electric current.
– The greater the ohm value the more di...
• Ohms: The measure of resistance in a
circuit to the flow of an electric current.
– The greater the ohm value the more di...
• Video Link! Ohms Law (Optional)
– Be proactive, record notes as he does.
– http://www.youtube.com/watch?v=-mHLvtGjum4
• Please complete these questions on the
available sheet.
• If 220 volts travel through a copper wire and
the current is 36A,
– What’s the resistance of the wire?
• If 220 volts travel through a copper wire and
the current is 36A,
– What’s the resistance of the wire?
• If 220 volts travel through a copper wire and
the current is 36A,
– What’s the resistance of the wire?
• If 220 volts travel through a copper wire and
the current is 36A,
– What’s the resistance of the wire?
• If 220 volts travel through a copper wire and
the current is 36A,
– What’s the resistance of the wire?
V 220
R= ------
I
• If 220 volts travel through a copper wire and
the current is 36A,
– What’s the resistance of the wire?
V 220
R= ------ -...
• If 220 volts travel through a copper wire and
the current is 36A,
– What’s the resistance of the wire?
V 220
R= ------ -...
• If 220 volts travel through a copper wire and
the current is 36A,
– What’s the resistance of the wire?
V 220
R= ------ -...
• Electricity flows through a wire much like
water flows through a pipe.
• Electricity flows through a wire much like
water flows through a pipe.
– A force is required to drive it and resistance ...
• Ohms Law Simulator at…
– http://phet.colorado.edu/en/simulation/ohms-law
• Please complete these questions on the
available sheet.
• A nine volt battery supplies power to a
cordless drill with a resistance of 18 ohms.
– How much current (I) is flowing t...
• A nine volt battery supplies power to a
cordless drill with a resistance of 18 ohms.
– How much current (I) is flowing t...
• A nine volt battery supplies power to a
cordless drill with a resistance of 18 ohms.
– How much current (I) is flowing t...
• A nine volt battery supplies power to a
cordless drill with a resistance of 18 ohms.
– How much current (I) is flowing t...
• A nine volt battery supplies power to a
cordless drill with a resistance of 18 ohms.
– How much current (I) is flowing t...
• A nine volt battery supplies power to a
cordless drill with a resistance of 18 ohms.
– How much current (I) is flowing t...
• A nine volt battery supplies power to a
cordless drill with a resistance of 18 ohms.
– How much current (I) is flowing t...
V = I x R
V = I x R
V = I x R
R R
V = I x R
R R
I = V
R
I = 9
18
I = .5 amps
• Please complete these questions on the
available sheet.
• A Rude Monkey decided to stick his tongue to
a 120 V outlet with 50,000 ohms of
resistance?
– How much current will he e...
• A Rude Monkey decided to stick his tongue to
a 120 V outlet with 50,000 ohms of
resistance?
– How much current will he e...
• A Rude Monkey decided to stick his tongue to
a 120 V outlet with 50,000 ohms of
resistance?
– How much current will he e...
• A Rude Monkey decided to stick his tongue to
a 120 V outlet with 50,000 ohms of
resistance?
– How much current will he e...
• A Rude Monkey decided to stick his tongue to
a 120 V outlet with 50,000 ohms of
resistance?
– How much current will he e...
• A Rude Monkey decided to stick his tongue to
a 120 V outlet with 50,000 ohms of
resistance?
– How much current will he e...
• A Rude Monkey decided to stick his tongue to
a 120 V outlet with 50,000 ohms of
resistance?
– How much current will he e...
• A Rude Monkey decided to stick his tongue to
a 120 V outlet with 50,000 ohms of
resistance?
– How much current will he e...
• A 110 volt outlet supplies power to a strobe
light with a resistance of 2600 ohms.
– How much current is flowing through...
• A 110 volt outlet supplies power to a strobe
light with a resistance of 2600 ohms.
– How much current is flowing through...
• A 110 volt outlet supplies power to a strobe
light with a resistance of 2600 ohms.
– How much current is flowing through...
• A 110 volt outlet supplies power to a strobe
light with a resistance of 2600 ohms.
– How much current is flowing through...
• A 110 volt outlet supplies power to a strobe
light with a resistance of 2600 ohms.
– How much current is flowing through...
• A 110 volt outlet supplies power to a strobe
light with a resistance of 2600 ohms.
– How much current is flowing through...
• Please complete these questions on the
available sheet.
• Video Link! Current, Voltage, Resistance
– http://www.youtube.com/watch?v=J4Vq-
xHqUo8
• Visit a more complex circuit simulator AC
and DC
• http://phet.colorado.edu/en/simulation/circ
uit-construction-kit-ac
• Visit an online circuit builder if materials
are not present.
– http://phet.colorado.edu/en/simulation/circuit-
construc...
 Please record the symbols and their
names below.
Copyright © 2010 Ryan P. Murphy
 Please record the symbols and their
names below.
Copyright © 2010 Ryan P. Murphy
 Please record the symbols and their
names below.
Copyright © 2010 Ryan P. Murphy
 Please record the symbols and their
names below.
Copyright © 2010 Ryan P. Murphy
 Please record the symbols and their
names below.
Copyright © 2010 Ryan P. Murphy
 Please record the symbols and their
names below.
Copyright © 2010 Ryan P. Murphy
 Please record the symbols and their
names below.
Copyright © 2010 Ryan P. Murphy
• Activity – Creating a Circuit
– Please create a circuit to light the light bulb
with a switch.
– Draw the circuit in you...
• Electricity Available Sheet
• Possible answer to drawing a circuit.
Copyright © 2010 Ryan P. Murphy
• Activity: Connecting all of the lights to create
one large circuit.
–Can we connect all of the lights along a
chain?
–Wh...
• This will be you at some point in your life
so pay attention.
• This will be you at some point in your life
so pay attention.
• When you jump a car’s battery, ground the
negative.
– Avoid touching the cables together and notice
the sequence, 1, 2, ...
• When you jump a car’s battery, ground the
negative.
– Avoid touching the cables together and notice
the sequence, 1, 2, ...
• When you jump a car’s battery, ground the
negative.
– Avoid touching the cables together and notice
the sequence, 1, 2, ...
• When you jump a car’s battery, ground the
negative.
– Avoid touching the cables together and notice
the sequence, 1, 2, ...
• When you jump a car’s battery, ground the
negative.
– Avoid touching the cables together and notice
the sequence, 1, 2, ...
• Video! How to jumpstart a car. (Saab Ad?)
– You will be driving soon, and may have to do this
on your own. Is this an ad...
 Typical outlet for AC
Copyright © 2010 Ryan P. Murphy
 Typical outlet for AC
Copyright © 2010 Ryan P. Murphy
 Typical outlet for AC
Copyright © 2010 Ryan P. Murphy
 Typical outlet for AC
Copyright © 2010 Ryan P. Murphy
• Danger – Do not attempt electrical work
until you have learned the safe and proper
technique from a certified electricia...
• Danger – Do not attempt electrical work
until you have learned the safe and proper
technique from a certified electricia...
• Activity Challenge.
• Visit this website and fill in the blanks correctly
to demonstrate understanding.
– http://educati...
 New Area of Focus: Magnetism
Copyright © 2010 Ryan P. Murphy
 Magnetism: The force produced by a
magnetic field.
Electric charges in motion.
Copyright © 2010 Ryan P. Murphy
 A magnet is an object or a device that
gives off an external magnetic field.
Copyright © 2010 Ryan P. Murphy
 A magnet is an object or a device that
gives off an external magnetic field.
Copyright © 2010 Ryan P. Murphy
• Demonstration – Iron filings over a
magnetic field
– Sprinkle iron filings on a piece of paper.
– Create the two poles a...
• Demonstration – Iron filings over a
magnetic field
– Sprinkle iron filings on a piece of paper.
– Create the two poles a...
• Demonstration – Iron filings over a
magnetic field
– Sprinkle iron filings on a piece of paper.
– Create the two poles a...
• Demonstration – Iron filings over a
magnetic field
– Sprinkle iron filings on a piece of paper.
– Create the two poles a...
• Demonstration – Iron filings over a
magnetic field
– Sprinkle iron filings on a piece of paper.
– Create the two poles a...
• Demonstration – Iron filings over a
magnetic field
– Sprinkle iron filings on a piece of paper.
– Create the two poles a...
• Demonstration – Iron filings over a
magnetic field. Answer to visual!
– Sprinkle iron filings on a piece of paper.
– Cre...
• The term magnetism is derived from
Magnesia, the name of a region in Asia Minor
where lodestone, a naturally magnetic ir...
• Magnet: An object that is surrounded by a
magnetic field and that has the property,
either natural or induced, of attrac...
• Magnet: An object that is surrounded by a
magnetic field and that has the property,
either natural or induced, of attrac...
• Magnet: An object that is surrounded by a
magnetic field and that has the property,
either natural or induced, of attrac...
• The spinning inner cores of solid and liquid
Iron creates a giant electromagnetic field.
Copyright © 2010 Ryan P. Murphy
• The EM field creates a kind of force field
against charged particles from hitting
Earth.
Copyright © 2010 Ryan P. Murphy
• The EM field creates a kind of force field
against charged particles from hitting
Earth.
Copyright © 2010 Ryan P. Murphy
• The EM field creates a kind of force field
against charged particles from hitting
Earth.
Copyright © 2010 Ryan P. Murphy
• The EM field creates a kind of force field
against charged particles from hitting
Earth.
Copyright © 2010 Ryan P. Murphy
• The EM field creates a kind of force field
against charged particles from hitting
Earth.
Copyright © 2010 Ryan P. Murphy
• This would be our Earth without the
protective electromagnetic field created by
our spinning core.
Copyright © 2010 Ryan...
• Earth Available Sheet, Formation,
Seasons, EM Field, Phases of the Moon.
• Activity! Drawing the earth’s EM Field.
• Activity! Drawing the earth’s EM Field.
EM Field refers to Electromagnetic
• Activity! Drawing the earth’s EM Field.
EM Field refers to Electromagnetic
• Activity! Drawing the earth’s EM Field.
– Pass out a paper plate to everyone.
– Draw a Earth about the size of a golf ba...
• Activity! Drawing the earth’s EM Field.
– Spread iron filings all around the plate.
– From below, place a magnet beneath...
• Activity! Drawing the earth’s EM Field.
– Spread iron filings all around the plate.
– From below, place a magnet beneath...
• Activity! Drawing the earth’s EM Field.
– Spread iron filings all around the plate.
– From below, place a magnet beneath...
• Activity! Drawing the earth’s EM Field.
– Spread iron filings all around the plate.
– From below, place a magnet beneath...
• Activity! Drawing the earth’s EM Field.
– Spread iron filings all around the plate.
– From below, place a magnet beneath...
• Electromagnetic field protects the earth
from charged particles.
– It also creates the Aurora borealis (Northern
Lights)
Earths EM field. Learn more:
http://image.gsfc.nasa.gov/poetry/
magnetism/magnetism.html
• Video Link. Aurora borealis
– http://www.youtube.com/watch?v=FcfWsj9OnsI
– It needs music
http://www.youtube.com/watch?v...
• Most of the atmosphere that use to be on
Mars, as well as the abundance of liquid
water is now gone because of the plane...
• Most of the atmosphere that use to be on
Mars, as well as the abundance of liquid
water is now gone because of the plane...
Compass: A navigational instrument for
determining direction relative to the earth's
magnetic poles.
Copyright © 2010 Ryan...
Compass: A navigational instrument for
determining direction relative to the earth's
magnetic poles.
Copyright © 2010 Ryan...
• The magnetic poles of the earth have shifted
throughout Earth’s history.
Copyright © 2010 Ryan P. Murphy
• The magnetic poles of the earth have shifted
throughout Earth’s history.
Copyright © 2010 Ryan P. Murphy
Magnetism. Lear...
• How to hold the compass and your posture is
very important to get correct bearings.
•
Copyright © 2010 Ryan P. Murphy
• Activity! Learning to use a compass.
– Put “Red Fred in the shed”
– Put “Black Jack in the shack”
Copyright © 2010 Ryan ...
• Activity! Learning to use a compass.
– Put “Red Fred in the shed”
– Put “Black Jack in the shack”
Copyright © 2010 Ryan ...
• Activity! Learning to use a compass.
– Put “Red Fred in the shed”
– Put “Black Jack in the shack”
Copyright © 2010 Ryan ...
• Activity! Learning to use a compass.
– Put “Red Fred in the shed”
– Put “Black Jack in the shack”
Copyright © 2010 Ryan ...
• Activity! Learning to use a compass.
– Put “Red Fred in the shed”
– Put “Black Jack in the shack”
Copyright © 2010 Ryan ...
• Activity! Learning to use a compass.
– Put “Red Fred in the shed”
– Put “Black Jack in the shack”
Copyright © 2010 Ryan ...
• Activity! Learning to use a compass.
– Put “Red Fred in the shed”
– Put “Black Jack in the shack”
Copyright © 2010 Ryan ...
• Video Link! Using a Compass
– http://www.youtube.com/watch?v=6mTISEANFFY
Copyright © 2010 Ryan P. Murphy
Shed
Follow dir...
• Going outside to use the compass.
– Find 0 degrees / North (hold and face)
– Mark ground at feet with object.
– Turn dia...
• Activity! (Optional) Participate in an
Orienteering Course or create your own.
Copyright © 2010 Ryan P. Murphy
“Do you
s...
• Activity! (Optional) Participate in an
Orienteering Course or create your own.
Copyright © 2010 Ryan P. Murphy
“Yah,” “H...
• Activity – Magnets
Copyright © 2010 Ryan P. Murphy
• Activity – Magnets
• Please use the magnets and demonstrate
the following (Show me as I walk around)
Copyright © 2010 Ry...
• Activity – Magnets
• Please use the magnets and demonstrate
the following (Show me as I walk around)
– Opposite poles at...
• Activity – Magnets
• Please use the magnets and demonstrate
the following (Show me as I walk around)
– Opposite poles at...
• Activity – Magnets
• Please use the magnets and demonstrate
the following (Show me as I walk around)
– Opposite poles at...
• Demonstration -Iron (Fe) is a very common
magnet.
– Neodymium magnets are some of the strongest
on Earth.
Copyright © 20...
 Faraday's Law: The changing of a
magnetic field can create voltage.
Copyright © 2010 Ryan P. Murphy
 Faraday's Law: The changing of a
magnetic field can create voltage.
Copyright © 2010 Ryan P. Murphy
• Electrical motors and generators use this
law. Magnets and Electricity
Copyright © 2010 Ryan P. Murphy
• Electrical motors and generators use this
law. Magnets and Electricity
Copyright © 2010 Ryan P. Murphy
• Electrical motors and generators use this
law. Magnets and Electricity
– How many products can we mention?
Copyright © 2...
• Activity Simulator. Faraday’s Law and
introduction to electromagnets.
• http://phet.colorado.edu/en/simulation/faraday
• An electric motor uses the attraction and
repelling properties of magnets to create
motion.
• Electric motors use a permanent magnet
and temporary magnet.
• Electric motors use a permanent magnet
and temporary magnet.
• Electric motors use a permanent magnet
and temporary magnet.
– The permanent magnetic has a north and
south Pole.
• Electric motors use a permanent magnet
and temporary magnet.
– The permanent magnetic has a north and
south Pole.
– The ...
• The motor works by passing an electric
current through a wire.
• The motor works by passing an electric
current through a wire.
– The permanent magnet has a magnetic field (north pole
a...
• The motor works by passing an electric
current through a wire.
– The permanent magnet has a magnetic field (north pole
a...
• The motor works by passing an electric
current through a wire.
– The permanent magnet has a magnetic field (north pole
a...
• The motor works by passing an electric
current through a wire.
– The permanent magnet has a magnetic field (north pole
a...
• The strength of the electromagnet's magnetic
field can be increased by increasing the
current through the wire, or by fo...
• When the battery is not connected, the
temporary magnet (loop / electromagnet)
sits in the magnetic field of the permane...
• When the battery is not connected, the
temporary magnet (loop / electromagnet)
sits in the magnetic field of the permane...
• When the battery is not connected, the
temporary magnet (loop / electromagnet)
sits in the magnetic field of the permane...
• When the battery is not connected, the
temporary magnet (loop / electromagnet)
sits in the magnetic field of the permane...
• Video Link and Directions.
• How to make a simple electric motor
• http://www.youtube.com/watch?v=ziWUmI
UcR2k
• Activity! Building a small electric engine.
• A.) Coil the wire around the D battery
many times. Remove the coil and wra...
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Electricity and Magnetism Lesson PowerPoint, Physical Science Unit
Electricity and Magnetism Lesson PowerPoint, Physical Science Unit
Electricity and Magnetism Lesson PowerPoint, Physical Science Unit
Electricity and Magnetism Lesson PowerPoint, Physical Science Unit
Electricity and Magnetism Lesson PowerPoint, Physical Science Unit
Electricity and Magnetism Lesson PowerPoint, Physical Science Unit
Electricity and Magnetism Lesson PowerPoint, Physical Science Unit
Electricity and Magnetism Lesson PowerPoint, Physical Science Unit
Electricity and Magnetism Lesson PowerPoint, Physical Science Unit
Electricity and Magnetism Lesson PowerPoint, Physical Science Unit
Electricity and Magnetism Lesson PowerPoint, Physical Science Unit
Electricity and Magnetism Lesson PowerPoint, Physical Science Unit
Electricity and Magnetism Lesson PowerPoint, Physical Science Unit
Electricity and Magnetism Lesson PowerPoint, Physical Science Unit
Electricity and Magnetism Lesson PowerPoint, Physical Science Unit
Electricity and Magnetism Lesson PowerPoint, Physical Science Unit
Electricity and Magnetism Lesson PowerPoint, Physical Science Unit
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Electricity and Magnetism Lesson PowerPoint, Physical Science Unit

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This PowerPoint is one small part of the Matter, Energy, and the Environment Unit from www.sciencepowerpoint.com. This unit consists of a five part 3,500+ slide PowerPoint roadmap, 12 page bundled homework package, modified homework, detailed answer keys, 20 pages of unit notes for students who may require assistance, follow along worksheets, and many review games. The homework and lesson notes chronologically follow the PowerPoint slideshow. The answer keys and unit notes are great for support professionals. The activities and discussion questions in the slideshow are meaningful. The PowerPoint includes built-in instructions, visuals, and review questions. Also included are critical class notes (color coded red), project ideas, video links, and review games. This unit also includes four PowerPoint review games (110+ slides each with Answers), 38+ video links, lab handouts, activity sheets, rubrics, materials list, templates, guides, and much more. Also included is a 190 slide first day of school PowerPoint presentation.
Areas of Focus: Matter, Dark Matter, Elements and Compounds, States of Matter, Solids, Liquids, Gases, Plasma, Law Conservation of Matter, Physical Change, Chemical Change, Gas Laws, Charles Law, Avogadro's Law, Ideal Gas Law, Pascal's Law, Archimedes Principle, Buoyancy, Seven Forms of Energy, Nuclear Energy, Electromagnet Spectrum, Waves / Wavelengths, Light (Visible Light), Refraction, Diffraction, Lens, Convex / Concave, Radiation, Electricity, Lightning, Static Electricity, Magnetism, Coulomb's Law, Conductors, Insulators, Semi-conductors, AC and DC current, Amps, Watts, Resistance, Magnetism, Faraday's Law, Compass, Relativity, Einstein, and E=MC2, Energy, First Law of Thermodynamics, Second Law of Thermodynamics-Third Law of Thermodynamics, Industrial Processes, Environmental Studies, The 4 R's, Sustainability, Human Population Growth, Carrying Capacity, Green Design, Renewable Forms of Energy (The 11th Hour)

This unit aligns with the Next Generation Science Standards and with Common Core Standards for ELA and Literacy for Science and Technical Subjects. See preview for more information
If you have any questions please feel free to contact me. Thanks again and best wishes. Sincerely, Ryan Murphy M.Ed www.sciencepowerpoint@gmail.com
Teaching Duration = 4+ Weeks

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Electricity and Magnetism Lesson PowerPoint, Physical Science Unit

  1. 1. • We have a 100 watt light bulb using .83 amps of power per second. – How many volts does it require? – Volts = watts divided by amps. – Volts = 100 / .83 – Volts = 120
  2. 2. • RED SLIDE: These are notes that are very important and should be recorded in your science journal. Copyright © 2010 Ryan P. Murphy
  3. 3. -Nice neat notes that are legible and use indentations when appropriate. -Example of indent. -Skip a line between topics -Don’t skip pages -Make visuals clear and well drawn. Please label. Ice Melting Water Boiling Vapor GasT E M P Heat Added 
  4. 4. • RED SLIDE: These are notes that are very important and should be recorded in your science journal. • BLACK SLIDE: Pay attention, follow directions, complete projects as described and answer required questions neatly. Copyright © 2010 Ryan P. Murphy
  5. 5.  New Area of Focus, Electricity and Magnetism Copyright © 2010 Ryan P. Murphy
  6. 6. • What would life be like without electricity? Copyright © 2010 Ryan P. Murphy
  7. 7. • Much different than it is for most of us.
  8. 8. • Much different than it is for most of us.
  9. 9. • Video Link! Nikola Tesla… Hank explains great minds. – Preview for language. – http://www.youtube.com/watch?v=pPnGvjmIgZA
  10. 10. • Does somebody want to try and define the word electricity?
  11. 11. • There is no single definition called "electricity." Copyright © 2010 Ryan P. Murphy
  12. 12. • There is no single definition called "electricity." • ELECTRICITY DOES NOT EXIST Copyright © 2010 Ryan P. Murphy
  13. 13. • Electricity is a variety of independent science concepts all with one single name. Copyright © 2010 Ryan P. Murphy
  14. 14. • These are the questions and definitions we need to know to generate a definition for electricity? – What is electric charge? – What is electrical energy? – What are electrons – What is electric current? – What is an imbalance of charge? – What is an electric field? – What is voltage? – What is electric power? – What is a spark? – What is electromagnetism? – What is electrical science? – What is electrodynamics? – What is electrostatics? – What are electrical phenomena? Copyright © 2010 Ryan P. Murphy
  15. 15. • These are the questions and definitions we need to know to generate a definition for electricity? – What is electric charge? – What is electrical energy? – What are electrons – What is electric current? – What is an imbalance of charge? – What is an electric field? – What is voltage? – What is electric power? – What is a spark? – What is electromagnetism? – What is electrical science? – What is electrodynamics? – What is electrostatics? – What are electrical phenomena? Copyright © 2010 Ryan P. Murphy
  16. 16.  Electricity is related to charges, and both electrons (-) and protons (+) carry a charge. Copyright © 2010 Ryan P. Murphy
  17. 17. • We will skip most of the atomic information. – We will examine circuits and static charges for this unit. Copyright © 2010 Ryan P. Murphy
  18. 18. • Electrons are negatively charged Copyright © 2010 Ryan P. Murphy
  19. 19. • Electrons are negatively charged Copyright © 2010 Ryan P. Murphy
  20. 20. • Electrons are negatively charged • Protons (nucleus) are positively charged Copyright © 2010 Ryan P. Murphy
  21. 21. • Electrons are negatively charged • Protons (nucleus) are positively charged Copyright © 2010 Ryan P. Murphy
  22. 22. • Electrons are negatively charged • Protons (nucleus) are positively charged Copyright © 2010 Ryan P. Murphy
  23. 23. • Electrons are negatively charged • Protons (nucleus) are positively charged • Their charges are about equal Copyright © 2010 Ryan P. Murphy
  24. 24. • Electrons are negatively charged • Protons (nucleus) are positively charged • Add Electrons – Atom becomes more negatively charged. Copyright © 2010 Ryan P. Murphy
  25. 25. • Electrons are negatively charged • Protons (nucleus) are positively charged • Take away (strip) electrons then the atom becomes more positively charged. Copyright © 2010 Ryan P. Murphy
  26. 26. • Annoying Tape. – Teacher gives each student 2 long pieces (10 centimeters each) strips of clear tape. • Make non-stick handles by folding a small amount tape on itself. Copyright © 2010 Ryan P. Murphy
  27. 27. • Annoying Tape. – Teacher gives each student 2 long pieces (10 centimeters each) strips of clear tape. • Make non-stick handles by folding a small amount tape on itself. – Stick one piece of tape to table. – Stick the other piece of tape on that tape. – Quickly pull tape from table and then apart. – Observe what happens to the tape when it gets close to each other and then eventually your arm. • Try and dispose of in trash barrel by shaking the tape from your hand and not picking. Copyright © 2010 Ryan P. Murphy
  28. 28. • Annoying Tape. – Teacher gives each student 2 long pieces (10 centimeters each) strips of clear tape. • Make non-stick handles by folding a small amount tape on itself. – Stick one piece of tape to table. – Stick the other piece of tape on that tape. – Quickly pull tape from table and then apart. – Observe what happens to the tape when it gets close to each other and then eventually your arm. • Try and dispose of in trash barrel by shaking the tape from your hand and not picking. Copyright © 2010 Ryan P. Murphy
  29. 29. • What happened!
  30. 30. • What happened! – When you removed the tape from the table you gave it an electrical charge. When you peeled the tape apart from each other, one piece of tape gained more of a charge than the other.
  31. 31. • What happened! – When you removed the tape from the table you gave it an electrical charge. When you peeled the tape apart from each other, one piece of tape gained more of a charge than the other. • Opposite charges attract (+) (-)
  32. 32. • Annoying Tape. – Teacher gives each student 2 long pieces (10 centimeters each) strips of clear tape. • Make non-stick handles by folding a small amount tape on itself. – Stick both pieces of tape to table. – Quickly pull tape from table. – Observe what happens to the tape when it gets close to each other and then eventually your arm. • Try and dispose of in trash barrel by shaking the tape from your hand and not picking. Copyright © 2010 Ryan P. Murphy
  33. 33. • Annoying Tape. – Teacher gives each student 2 long pieces (10 centimeters each) strips of clear tape. • Make non-stick handles by folding a small amount tape on itself. – Stick both pieces of tape to table. – Quickly pull tape from table. – Observe what happens to the tape when it gets close to each other and then eventually your arm. • Try and dispose of in trash barrel by shaking the tape from your hand and not picking. Copyright © 2010 Ryan P. Murphy
  34. 34. • What happened?
  35. 35. • What happened? – Each piece of tape gained a negative charge when removed from the table. When they were brought close together they moved away from each other.
  36. 36. • What happened? – Each piece of tape gained a negative charge when removed from the table. When they were brought close together they moved away from each other. • Like charges repel. (-) (-)
  37. 37. • Life occurs because of electrostatic charges.
  38. 38. • Life occurs because of electrostatic charges. • Without them, life would simple unravel.
  39. 39. • Life occurs because of electrostatic charges. • Without them, life would simple unravel. Electricity. Learn more at… http://science.howstuffworks.com/electri city.htm
  40. 40. • Electricity Available Sheet
  41. 41.  Lightning is a big spark that occurs when electrons move from one place to anothe