Energy source

What do fossil fuels release when burned?

• Oxygen

• Carbon Dioxide (CO2)

• Nitrogen

• Methane

What is the main effect of carbon dioxide in the atmosphere?

• It cools the Earth

• It traps heat

• It creates wind

• It produces rain

What percentage of the world's electricity is supplied by hydroelectric power?

• 10%

• 19%

• 25%

• 50%

What is a characteristic of fossil fuels?

• They are renewable

• They are non-renewable

• They are always abundant

• They are easy to replace

What is the primary function of a solar panel?

• To absorb heat

• To convert solar radiation into electrical energy

• To store water

• To generate wind energy

Cogeneration involves harnessing waste energy to heat buildings or perform useful tasks.

• True

• False

Passive solar energy can only be absorbed by specific materials.

• True

• False

Fossil fuels are renewable resources.

• True

• False

Hydroelectric power supplies about 19% of the world's electricity.

• True

• False

Solar panels are inexpensive devices that convert solar radiation into electrical energy.

• True

• False