hydro and geothermal

In the recent past, humans have been looking for and trying out alternative sources of renewable energy to reduce dependence on fossil fuels. How can the energy from volcanoes be tapped for human use?

• The energy from the magma can be used to heat water.

• Geothermal energy can be used to generate electricity.

Which refers to the process of producing energy by utilizing heat trapped inside the earth surface?

• Geothermal energy

• Solar energy

• Wave energy

Where does geothermal energy come from?

• wind

• river

• sunlight

• heat from the earth

What does it mean when we say that geothermal energy is sustainable?

• That it generates greenhouse gases

• That it will not be used up.

• That there is a limited supply.

What is the main disadvantage to building geothermal energy plants?

• pollution

• cost

• nuclear fallout

What is hydro?

• water

• wind

• nuclear

• gas

Hyrdo Power is a __________ energy resource.

• Renewable
• Nonrenewable

What happens when water flows through a dam?

• The water evaporates.

• The water turns a turbine.

• The water is pumped back up.

What allows water to flow through a dam?

• The water is pumped out.

• The water is pushed out when a motor is turned on.

• The water is released from a higher elevation to a lower elevation.

What is the job of a turbine?

• When it spins, it makes sparks causing electricity.

• It moves the energy from the flow of water to a generator.

• It controls the water so it can be pumped back up the dam.