Question:

Answer: C) Solar energy technology is now cheaper than conventional energy.

Question:

Answer: C) Many people strongly prefer using fossil fuels over renewable energy sources.

Question:

Answer: D) It collects light and converts it directly to electrical power.

Question:

Answer: B) Water is stored behind a dam. When water is released from the dam, it flows downhill through a turbine, spinning the turbine and generating electricity.

Question: What is the major by-product of obtaining hydrogen power from hydrogen combustion?

A) Methane

B) Water vapor

C) Ethanol

D) Carbon dioxide

E) Ozone

Answer: B) Water vapor