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Electricity

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by

Wendy Dupasquier

on 14 September 2016

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Transcript of Electricity

ELECTRICITY
What is ELECTRICITY?
&
How do we use it?
Electricity is
a type of energy
.
It is hard to understand because you can't
touch it, hear it, or see it.
What people
can see
are the
things
that
electricity can do
...
make a toaster burn bread..
.
have a bad hair day...
or make a light bulb glow.
How is electricity made?
Electricity is made any time that small particles called electrons move from one object or place to another.
There are two types of electricity:
- Static Electricity
- Current Electricity
Three ways to tell if static electricity is present are:
1. It sparks and can shock you
2. It makes a crackling sound
3. It causes things to stick together
Static Electricity - How does it work?

When you rub your head with a balloon, the balloon will stick to the wall- why?

Friction

is made when

two different objects are rubbed together

and this creates static electricity.
For Example:
Step 1:

Rubbing causes the

balloon to

"steal" electrons
from your hair.
Step 2: The balloon has a

buildup
of electrons

so it has a
negative charge
.

Your hair has

lost electrons

so it becomes
positively charged
.
Step 3: Because
opposites attract
, the

negatively charged

balloon will stick to the wall.
Step 4: If there are enough electrons on
the balloon, they will try and

"jump"

to the wall and will make a

small spark
. ZAP!!!
Does Static Electricity Occur?
Some everyday examples include:

1. Dragging rubber-soled shoes can "steal" electrons from the carpet and you can usually shock someone with your buildup of electrons.
2. Certain types of cloth rubbing together in the dryer will "steal" electrons causing clothes to stick together. (static cling)
3. Electrons collect on your TV screen and produce static electricity. (This is why there is so much dust on most TV screens)
Current Electricity

Current electricity is electricity that is moving
or flowing in wires.

It is much more useful than static electricity and is used to operate all of our electrical appliances.
Current electricity always moves in currents.

For example:
- electricity used to make a light blub
- electricity used to start a vehicle
- electricity used to run a stereo system
What are Circuits?

A circuit is an unbroken pathway along which
electrons can flow.

(Circuits come from the word "circle")

If there is a break in the pathway, the electricity will stop.
Complete Circuit

The

electrical current flows in a complete circle
.
It flows from the batter, through the light , and back to the battery - a complete circuit.
Incomplete Circuit

The

path for the electricity to flow
has been
broken
.
The electricity will stop and the bulb will not light.
Lesson 1 - Activity 1



of three activities you did to get ready for school this morning that used electrical appliances.


Explain how you normally do these activities, and the explain how you would accomplish these activities without using electricity.

Electricity Safety

Electricity can be very dangerous
if it is not used properly
Things to
about electricity safety:
-water and electricity don't mix

-keep electricity where it belongs
(If cords are frayed or cracked they are dangerous)

-plugging too many devices into one socket can blow a fuse or even start a fire.
Focus your advertisement on the electrical hazards you have observed in your text and in the video.
Lesson 2 - Activity 2

Make a public service announcement which provides safety information about electricity.
What is Electricity?
What examples of energy being wasted were shown the video?
Lesson 2 - Activity 4
Identify situations in your school where energy is being wasted.

Develop strategies to conserve energy for each situation. ( See Activity Sheet)
Lesson 4 - Activity 1

Use a Venn Diagram to show the similarities and differences between current and static electricity.

What are Circuits ?

A circuit is an unbroken pathway along which electrons can flow.

If there is a break in the pathway, the electricity will stop.

Complete Circuit

The electrical current flows in a complete circle.

It flows from the battery, through the light, and back to the battery – a complete circuit.

Incomplete Circuit


The path for the electricity to flow has been broken.

The electricity will stop and the bulb will not light.
Full transcript