Environmental Systems Unit 11: Energy Review

Biodiesel is a biofuel that is used as a supplement to power gasoline engines in cars.

• True

• False

About half of the electricity generated in the United States comes from coal.

• True

• False

When you plug your cell phone into an electrical outlet to recharge it, you are using energy for

• transportation.

• industry.

• residential use

• commercial use.

The fact that fossil fuels formed at the bottom of swamps implies that

• most of Earth's surface was once covered by swamps.

• there was little or no oxygen in that environment.

• living things once lived in all parts of Earth.

• swamps are under large amounts of pressure.

In the primary extraction of oil,

• oil rises in the well to the surface without being pumped.

• water is pumped into the ground to force the oil to the surface.

• chemicals are used to dissolve the oil and bring it to the surface.

• carbon dioxide is pumped beneath oil deposits

How is natural gas transported from its source to where it is used?

• by trucks

• by ships

• by railroad tanker cars

• by pipelines

If fossil fuels continue to be used at their current rate, which will probably be used up first?

• coal

• oil

• natural gas

• methane hydrate

Although acid drainage can be a natural process, it speeds up when an area is strip-mined because strip mining

• exposes large areas of rock surface that contain sulfide minerals.

• removes large amounts of rock.

• releases large amounts of coal dust, which forms acid drainage.

• exposes underground water, which combines with minerals to form acid.

Which country or region is coal-rich and oil-poor?

• Middle East

• Germany

• Iran

• United States

What is the purpose of the chain reaction in a nuclear power plant?

• to produce the heat and steam that turn the turbine

• to produce neutrons that turn the generator

• to cause steam to condense into liquid water

• to reduce the temperature in the cooling tower