22.

Which of the following describes an advantage of using tidal turbines instead of a hydroelectric dam to generate energy? (2 points)

Tidal turbines are more expensive to maintain than hydroelectric dams.

Tidal turbines do not generate any waste, whereas hydroelectric dams do.

Tidal turbines use a more reliable source of energy than hydroelectric dams.

Tidal turbines do not emit greenhouse gases, whereas hydroelectric dams do.

Tidal turbines do not change the path of a water body, whereas hydroelectric dams do.

23.

Which of the following describes how a hydroelectric dam can affect human populations? (2 points)

I. A dam can cause flooding in nearby towns. II. A dam can provide power to local residents. III. A dam can reduce water flow to farms downstream.

I only

II only

I and II only

I and III only

I, II, and III

24.

Which of the following accurately compares windmills and turbines used to generate wave energy? (2 points)

Windmills are used to generate force as well as electricity.

Windmill energy is more reliable than wave energy from a turbine.

Both windmills and turbines used to generate wave energy produce waste.

Windmills are available in fewer places than turbines used to generate wave energy are.

Windmills are located only on land, whereas turbines used to generate wave energy are located only at sea.