Electromagnets, Generators, and Electric Motors

What is formed when a wire in an electric circuit is wrapped around an iron core producing a magnetic field?

• electromagnet
• generator
• magnet
• electric motor

What is the device seen here?

• generator
• electric motor
• electromagnet
• magnet

Generators are devices that convert _____ energy into _____ energy.

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

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

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

When plugged into an outlet, the clock lights up to show the time.  What kind of energy transformation is this?

• chemical to light
• mechanical to chemical
• electrical to mechanical
• electrical to light

What type of energy transformation occurs in a toaster?

• chemical to electrical
• electrical to heat
• sound to chemical
• electrical to solar

When John plugs in a toy and turns it on, a marble is carried up to the top of a slide. At the top, a marble is released and it goes down a slide. What kind of energy transformation occurs to make this toy work?

• chemical to heat
• electrical to chemical
• sound to electrical
• electrical to mechanical

What must happen for an action to be considered work?

• force applied & energy created
• force applied & distance moved
• force applied & matter destroyed
• force applied & mass increased

When a force moves an object, the action is called ______.

• energy
• work
• force
• circuit