Energy

What is one advantage of using hydroelectricity as an energy source?

• heat is captured under the earth

• might change the environment upstream of the dam

• no emissions into the atmosphere

Why is it beneficial to use natural gas?

• there is a limited supply

• it releases low emissions

• it is non-renewable

A disadvantage for using coal to produce energy -

• is abundant everywhere

• is not friendly to the environment

• formed over a few years

Because biomass is a less concentrated form of energy it is inefficient.

• True

• False

The ability of a system to do work, which causes change-

• fossil fuels

• energy

• conservation

A major disadvantage of nuclear power is -

• generates a small amount of energy

• no greenhouse gases are produced

• the by-product waste is radioactive

Hydro-plants are expensive to build and require expensive machinery.

• True

• False

Why is it beneficial to recycle paper?

• there is plenty of land for landfills

• recycling produces toxic chemicals

• to keep from using natural resources

Which energy resource requires large open spaces?

• natural gas

• wind

• hydropower

Hydropower creates energy by -

• the rays from the sun

• ocean water heated by the sun

• using the motion of the water to turn the turbines