Electricity

Static Electricity

A build-up of electrical charges on an object

Current Electricity

A flow of electric charge.

Electrical Charge

electrical particles that are negatively charged

Circuit

A system that provides a pathway for electrical current to flow through

Cell

Supplies energy to a circuit, by pushing current from the positive to the negative end

Voltmeter

A device used to measure voltage, or electrical potential energy difference

Ammeter

A device used to measure current in a circuit

Wire

a thin, flexible thread of metal

Resistor

An electrical device that resists the flow of electrical current

Bulb

In a circuit, this shows if electricity is flowing by lighting up

Switch

a device that opens or closes a circuit

Battery

A device that converts chemical energy to electrical energy

1- Fill in the table

	Static electricity	Current electricity
What is it caused by?	The imbalance between negative and positive charges in an object	An atom usually has the same number of protons  (which have a positive charge) and electrons (which have a negative charge)
Do the negative charges move?	Negative charges can move freely from one object to another	An electric circuit is caused by the movement of the charges through the conductors of the circuit.
Does it power appliances?	Electricity usage monitor that tells you exactly how many kWh a device or appliance is drawing.	If the electricity provided is desired to do work, the load/appliance can be placed at the middle of the electric circuit

2- What are some examples of static electricity:

1. If you rub your shoe on the carpet, your body collects extra electrons

2. When you touch the playground your body get static electricity.

3. Walking across the carpet and touching a metal door handle and pulling your hat off and having your hair stand on end.

4. When you jump on the trampoline get electricity static.

Write up for a Van der Graaff experiment:

How does the Van der Graaff machine work?

A Van de Graaff generator pulls electrons from the Earth, moves them along a belt and stores them on the large sphere. These electrons repel each other and try to get as far away from each other as possible, spreading out on the surface of the sphere.

What was one of the experiments they did with the machine?

Is when they hold there hands on the machine and the machine is turning on and the static is all in there body.

Describe what happened, what did you see?

I see when my friend standing there holding the machine and the static was all in there body and their hair was standing up because of the electricity coming on their body.

Why did you see this happen?

Because my friend wanna try it and There hair went up because of the electricity going in there body and the static. I saw the teacher holding the small machine ball and he touches it to the big machine and it static and there is like a static light and the sound is loud.

Explain how lightning happens linking  to the ideas of static electricity

Often lightning occurs between clouds or inside a cloud. As the storm moves over the ground, the strong negative charge in the cloud attracts positive charges in the ground. These positives charges move up into the tallest objects like trees, telephone poles and houses.