4th grade science Chap. 13 test

A device that transforms electrical energy into movement or mechanical energy is a...

Lightning forms because negative water particles settle in a cloud near the ...

What types of energy does lightning give off? (there are 4)

Electrical wires are often covered with rubber, because rubber is a good....

When lightning strikes a lightning rod electrical energy flows through a wire and into the....

The current produced by dry cells is called...

What happens when the current travels through the second transformer before entering your home?

Alternating current is produced by a device called a...

How do similar electrical charges react to each other?

Name some materials that are NOT good conductors...

What is the name for a device that controls the current in a circuit?

Electrical devices in the home are connected in what kinds of circuits?

In a magnet what describes the way the poles effect each other.

True or false?  Some of the particles inside an atom have a positive electrical charge.
True False

True or false?  Atoms usually have an overall positive charge.
True False

Name some things to do if you hear thunder or see lightning.

Name some good conductors.

A material through which electricity does NOT flow.

The electricity that flows through a circuit is called...

True or false?  Inside atoms are tiny particles.
True False

True or false?  Some of the particles inside an atom have a negative electrical charge.
True False

A region of magnetic force surrounding a magnet.

A movement of an electrical charge from one object to another.

A magnet created by using electrical current

When each object in a circuit is connected to the cell separately and one object can be on while the other is off.

The buildup of electrical charge on a material.

Two objects connected to a cell in a single path (causing one object not to work if the other object is not working).

Where the pull of a magnet is strongest.

The complete path that electricity can move through.