Energy Review

A polished metal ball looks very shiny and bright on a sunny day. What makes the ball look shiny?

• The ball makes light.

• The ball reflects light.

• The ball absorbs light and then releases it.

• The ball absorbs light and keeps it inside.

Which object is designed to transform electrical energy into light energy?

• match

• candle

• lightbulb

What energy change takes place when a piece of bread is toasted in a toaster?

• chemical energy to light energy

• electrical energy to heat energy

• heat energy to chemical energy

• light energy to electrical energy

Sound is caused by?

• Vibrations

• Light Waves

• Conduction

• Movement of electrons

Why is there no sound in space?

• Because there is no light in space

• Because there is no air in space for the vibrations to travel though

• Because there is no electricity in space

• Because there is no water in space

Which of the following vocabulary words does NOT have to do with sound energy?

• Pitch

• Volume

• Frequency

• Refraction

The reflection of a sound wave off a hard surface causes an ______ .

• Echo

• Pitch

• Light

• Heat

What is the transfer of heat through direct touching of materials called?

• Conduction

• Radiation

• Convection

What is the transfer of heat through water or gas (air) called by a circular motion. Hot water/air rises while it pushes the cold water/air downwards and it causes a circular cycle.

• Conduction

• Radiation

• Convection

What is the transfer of energy that is radiated or transferred though space in the form of waves or rays?

• Conduction

• Radiation

• Convection