Final Exam Review #3 (Energy Changes, Fission & Fusion)

Which object uses electricity to produce radiant energy?

• windmill

• bicycle

• fan

• lightbulb

Which below changes electricity into light and (a little) heat energy?

• blender

• fan

• burning wood

• flashlight

Windmills convert what type of energy to another?

• electrical to mechanical (kinetic)

• mechanical (kinetic) to electrical

• thermal to sound

• nuclear to electrical

A burning fire changes....

• electrical into heat energy

• chemical into heat energy

• mechanical into potential energy

• thermal into heat energy

• chemical into light energy

What is another name for thermal energy?

• light

• heat

• radiant

• nuclear

• atomic

Radioisotopes are used in nuclear power plants. What is one risk (disadvantage) in using them?

• They don't produce as much energy as coal and oil.

• They are difficult to obtain from their source (the sun).

• Radiation can leak from the power plant and cause too much plant growth around the reactor.

• Radiation can leak from the power plant and cause great damage to many living things.

What is this a picture of?

• nuclear fission

• nuclear fusion

• chemical burning

• small atoms combining into a larger one

• large atom splitting into smaller ones

What is this a picture of?

• nuclear fission

• nuclear fusion

• chemical burning

• small atoms combining into a larger one

• large atom splitting into smaller ones

Where does nuclear fusion occur?

• our sun

• nuclear power plants

• stars

• lightning

• at Sponge Bob's

Which statement is true?

• Both fission and fusion absorb energy

• Both fission and fusion release energy

• Fission absorbs energy while fusion releases energy