2. ELECTRICITY
• is a flow or movement of electrically charged particles,
typically measured in amperes.
• this is a fundamental form of energy observable in positive
and negative forms that occurs naturally ( as in lightning) or
is produced ( as in a generator) and that is expressed in
terms if the movement and interaction of electrons.
• It is also related to charges, and both electrons and protons
carry a charge.
3. • Electrons – has a negative charge
• Protons – has a positive charge
• Neurons – no charge in nucleus
• Nucleus – the protons are located in the center of the atom,
concentrated in a small area
• Lightning – is the most commonly-observed form of electricity
- is a big spark that occurs when lots of electrons move from
one place to another quickly.
4. 3 Forms of lightning
• Cloud to cloud
• Cloud to surface
• Surface to cloud
5. ELECTRICITY AROUND YOU
-there are charges around the computer, the house,
and is constantly flowing through all of the wires in
the city.
6. 2 Main Types of Current
Direct Current – created by batteries
– is a constant stream of charges
in one direction
–best real life example is a battery
Alternating Current – that household form of
electricity
– is a stream of charges
that reverses direction
7. Conventional Current – physicists refer to as a flow from high
potential/voltage (positive) to low potential/voltage
(negative).
8. FLOWING BACK AND FORTH
• Scientists describe the cycle of switching direction as the frequency is
measured in Hertz
CHEAPER AND STRONGER
• Alternating current power is less expensive because you can increase
and decrease the current for AC power very easily
9. SEPARATING CHARGES
• Positive ion - removing electrons would leave the atom with more positives than negativ
• Negative ion – is a result of adding electrons to an atom
• Friction – is one of the ways to separate charge
Example: rubbing – you are actually rubbing electrons off one object and onto another
STATIC CHARGES
Static electricity – We say the changes are static
Insulators- Materials like glass and plastic or non conductors
10. TYPES OF CHARGING
• CHARGING BY FRICTION – When you rub one material to another
• CHARGING BY CONTACT – When two charged matter touch each other
• CHARGING BY INDUCTION - Charge conductors without contact
