Magnetism Review

Magnetism is generated by moving

• protons.
• electrons.
• neutrons.
• elements.

What kind of magnet can be turned on and off?

• refridgerator magnet
• electromagnet
• magnetite
• iron

The strongest part of a magnet is...

• the bars.
• the force field.
• the poles. 
• the middle.

A simple electromagnet can be made with which of the following?

• an electric current
• a turbine and nail
• a nail, a wire, and a battery
• a compass and a battery

Magnetism is generated by moving

• protons.
• electrons.
• neutrons.
• elements.

If you cut a magnet in half, what happens to the poles?

• One half gets the North Pole, the other half gets the South Pole
• Both halves get only a North Pole
• Both halves get only a South Pole
• Both halves get a North pole and a South Pole

What is responsible for the Magnetic Field around Earth?

• The Earth's crust
• The Earth's molton iron core
• The Earth's mantel
• The Sun

Electric motors are devices that convert _____ energy into  _____ energy.

• electrical; mechanical
• mechanical; electrical
• chemical; potential
• mechanical; kinetic

How can a wire become magnetic?

• point it north

• add a resistor

• heat it up

• run a current through it

What device takes in mechanical energy and produces electricity?

• motor

• generator

• electromagnet

• battery