Hydroelectricity

What is one disadvantage of hydroelectricity energy ?

• It doesn't work if you don't have volcanoes nearby .

• It doesn't work if you don't have rivers or moving water nearby.

• It doesn't work is not windy

• It doesn't work unless you have plenty of fossil fuels .

An advantage of hydroelectric power station.

• It produces thermal pollution

• electricity

  They are cheap to build

• Only a few dams have been built

• They produce no carbon dioxide when making electricity

Used to increase the height of water level.

• Dam

• Penstock

• Spillway

• Water reservoir

Water stored behind the dam is known as …………..

• Dam

• Water reservoir

• Spillway

• Penstock

What type of energy is being produced when a dam is placed across a river and water is released to turn a turbine that produces electricity?

• Geothermal

• Solar

• Wind

• Hydroelectric

Which of these hydroelectric dams has had a major impact on its surrounding ecosystems?

• Three Gorges Dam, China

• Grand Coulee Dam, WA USA

• Hoover Dam, NV USA

• All three have had a major impact on their surrounding ecosystems

Which of the following is a Con for hydroelectricity?

• Disturbs flooding cycles and nutrient depositio

• Destroys habitat

• All are Cons for hydroelectricity

• Disturbs flooding cycles and nutrient deposition

Which of the following is a Pro for hydroelectricity?

• It is renewable

• It is clean

• It is efficient

• All are Pros for hydroelectricity

Some hydroelectric dams have an upper and a lower reservoir and circulates the water back up to the top after it falls down. These are called

• diversionaries

• pumped storage

• channel storage

• head storage

What is a generator?

• A machine that converts one energy source into electrical energy.

• Only works with fossil fuels.

• A machine that creates radiation

• ly works with renewable energy.