Renewable Energy, Part 2

What does geothermal power use to create electricity?

• Gas

• Hot water

• Lava

• Underground fires

What is one of the most important steps of geothermal power?

• Returning water to the underground sources.

• Collecting water that stays in the pipes.

• Increasing the temperature of the underground water.

• Building plants over large underground sources of lava.

Which of the following is not a benefit of geothermal power?

• It is reliable.

• It is environmentally friendly.

• It is restricted to certain locations.

• It is sustainable.

Which renewable energy uses water stored in large reservoirs, such as lakes?

What is the name of the wall that holds water back in hydropower?

Which renewable source of energy can be made from corn?

• Biofuel

• Nature-fuel

• Biotech

• Maisefuel

How does biofuel help reduce ground pollution?

• Landfills can be a source of fuel.

• It burns the pollution out of the ground.

• Plastic and glass can be turned into fuel.

• It creates a protective layer in the ground.

What limitation of biofuel has an impact on forests?

How is biomass different from biofuel?

• It uses inorganic materials.

• It is cleaner than biofuel.

• It can use any organic material.

• It cannot be used to create electricity.

Which country has the highest level of energy created from renewable sources?