Energy, Conductors & Insulators Review

What are the properties of sound energy?

• produced by electrons, moves in waves, can be reflected

• produced by movement, can be reflected

• produced by vibrations, moves in waves, can be reflected

• produced by vibrations, moves in waves, can be refracted

What are the properties of light energy?

• Travels in a curved line; can be reflected or refracted

• Does not travel; can be reflected or refracted

• Travels in a zig zag line; can be reflected or refracted

• Travels in a straight line; can be reflected or refracted

Which of the following devices requires electrical energy to produce light and sound energy?

• Bicycle

• Television

• Drum

• Air conditioner

When you are throwing a ball or swinging on a swing, what type of energy are you using?

• Mechanical energy

• Thermal energy

• Light energy

• Sound energy

When you plug a stereo into the wall and turn it on, what types of energy are you using?

• Sound energy and light energy

• Electrical energy and mechanical energy

• Electrical energy and sound energy

• Mechanical energy and sound energy

In the dead of winter, Joshua built a fire in his fireplace. What type of energy is given off by the fire?

• Heat and mechanical energy

• Mechanical and sound energy

• Mechanical and light energy

• Heat and light energy

What is an insulator of heat or electrical energy?

• A material that allows heat or electrical energy to pass through easily

• A material that does not allow heat or electrical energy to pass through easily

What is a conductor of heat or electrical energy?

• A material that allows heat or electrical energy to pass through easily

• A material that does not allow heat or electrical energy to pass through easily

Winter clothes are made to keep people warm by allowing as little heat energy to escape the body of the person wearing them. What are the materials in these clothes called?

• Minerals

• Insulators

• Conductors

• Metals

Conductors are usually made from —

• yarn

• metal

• plastic

• wood