study guide

Define energy

• The ability to do work or cause change

• Stored energy

• electricity

• energy moving through wires

Define potential enegry

• moving energy

• energy moving through wires

• stored energy or energy that could happen

• energy of motion

Define kinetic energy

• ability to do work or cause change

• released energy

• energy moving through wires

• stored energy

Define mechanical energy

• energy of motion

• stored energy

• released energy

• energy moving through wires

Define electrical energy

• moving energy

• stored energy

• energy of motion

• energy moving through wires

When you turn on a television, what happens to the electrical energy that powers the television?

• it changes to light energy.

• it changes to sound energy.

• it changes into light and sound energy.

• it changes into light, sound, and heat energy.

Which activity has only potential energy?

• a ball bouncing

• a child swinging on the swing

• a child sliding down the slide

• a child standing at the top of a slide

When you cook food on the stove, energy is used to change the food. What kind of energy cooks food?

• thermal energy

• light energy

• sound energy

• mechanical energy

A toaster demonstrates which form of energy?

• thermal energy

• electrical and sound energy

• thermal, electrical, sound, mechanical, and light energy

• mechanical and sound energy

Thermal energy travels from _______ objects to ________ objects.

• warmer to cooler

• cooler to warmer