Static electricity is caused by an imbalance of electric charges, usually electrons, on the surface of materials. When certain materials are rubbed together, electrons can be transferred, leaving one material with an excess of electrons and a negative charge, and the other with a deficit of electrons and a positive charge. These imbalanced charges attract or repel each other, causing phenomena like balloons sticking to walls or hair standing on end. Lightning is a large-scale example of static electricity, where the bottoms of thunderclouds become negatively charged and the tops positively charged, until a discharge occurs as lightning.

1. STATIC
ELECTRICKERY
Presented by
Gaurav Singh Rajput
@gauravkrsrajput

2.  Have you ever stuck a balloon to the
wall after rubbing it on your head?
 Has your jumper ever made crackling
noises when you took it off?
 Have you ever got an electric shock o
ff your door knob?
 Have you ever seen lightening?

3. All these things happen
because of
Static Electricit
y

4. What is Static Electricity?
 Static electricity occurs when there is
a build up of electric charge on the sur
face of a material.
 It is called static electricity because th
e charges don’t move.
 The electricity we use everyday involv
es moving charges.

5. What is charge?
 To understand charge we have to look
at things on an extremely small scale.
 We have to try and understand things
that we can’t even see with the most p
owerful microscope.
Atoms!

6. The atom
 Everything we see around us everyday is m
ade of atoms.
 We can’t see individual atoms because the
y are so small.
 In fact the diameter of an atom is about 0.0
000000001m
 In the air in your classroom there are about
1500000000000000000000000000 atoms.

7. What is inside the atom?
 The atom is made of 3 sorts of particles.
The electron
The proton
The neutron
 We can imagine each as a tiny little ball.

8. Inside an atom
 The protons and neut
rons sit together in a
lump in the middle c
alled the nucleus.
 The electrons orbit a
round the nucleus, a
bit like the planets or
biting the Sun.
Most of the atom is empty space if ato
ms were the size of football fields, the
nucleus would be a grain of sand in the
middle and the electrons would be orbiti
ng around the edge.
.

9. Charge
 The electron is negatively charged.
 The proton is positively charged.
 The neutron has no charge, it is neutral.

10. Charge
 Most things have the same number of
electrons and protons in them.
 They don’t have any overall charge.
 If this isn’t true interesting things can h
appen.

11. How do charges behave?
 What do you know about magnets?
 2 north poles will repel each other, but
a north and a south put together will at
tract one another.
opposites attract, likes repel.

12. How do charges behave?
 Exactly the same thing happens with
charges.
 2 positive charges put together will re
pel each other.
 Put a positive charge near a negative
charge and they will attract each other
.
 A charged object may even attract a n
eutral one.

13. Static electricity
 Static electricity is caused when certai
n materials are rubbed against each o
ther.
 Electrons can be rubbed off one mater
ial and on to another.
 The material that has got extra electro
ns is now negatively charged
 The material which has lost electrons i
s positively charged.

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21. Static electricity
 It is this imbalance of positive and neg
ative charges that causes:
 Balloons to stick to walls.
 Your hair to stand on end when brush
your hair on a dry day.
 And the electric shock you sometimes
get from the door handle.

22. Your Turn to Experiment

23. Lightning

24. What causes lightning?
 Lightning is actually j
ust static electricity o
n a much larger scale
.
 The rubbing is cause
d by air moving arou
nd
 In thunderclouds bot
tom is usually negativ
e and top is positive.

25. Thunder
 When the lightning flash happens it he
ats the air to a temperature 5 times h
otter than the surface of the sun.
 This causes nearby air to expand and
vibrate forming the sound we hear as t
hunder.

26. Interesting facts
 Lightning bolts can travel at speeds of
up to 60,000 miles per second.
 Every second around 100 bolts of light
ning strike the Earth.
 One lightning bolt has enough electrici
ty to power 200,000 homes.
 You are more likely to be struck by lig
htning than be eaten by a shark.

27. Some myths
 Lightning never strikes in the same place t
wice.
 False, the Empire State Building is reported
ly struck 100 times a year.
 Wearing rubber shoes will protect me in a t
hunder storm.
 False, Lighting is too powerful to be stoppe
d by half an inch of rubber or several hundr
ed feet of rubber for that matter.
 https://www.bing.com/videos/search?q=Bill
+Nye+Static+Electricity&&view=detail&mid