Ch. 21 Test (Magnetism)

The particles in atoms that have a positive charge are called ______.

• Protons

• Neutrons

• Electrons

• Gravitrons

The particles in atoms that have a negative charge are called ______.

• Protons

• Neutrons

• Electrons

• gravitrons

A ferromagnetic material (like iron) with all the electron spins lined up in the same direction will make a _____

• generator

• solenoid

• turbine

• magnet

The lines drawn around this magnet show where its force can be noticed. This is called the ___________.

• magnetosphere

• magnetic poles

• magnetic field

• electromagnet

The parts of a magnet that has the greatest pull or push.

• generators

• fields

• turbines

• poles

Opposite poles ______ each other.

• Attract

• Repel

• Have not effect on

• All are correct

Two North ends of a magnet will _____ each other.

• Attract

• Repel

• Have no effect on

• All are true

A device that will change the amount of voltage running through a circuit.

• battery

• transformer

• generator

• electric motor

A device that changes chemical energy into electricity.

• turbine

• magnet

• electromagnet

• battery

A device (or machine) that converts mechanical energy into electricity.

• battery

• transformer

• generator

• electric motor