Hydroelectric Power

How do hydroelectric power plants generate electricity?

• By converting mechanical energy into electrical energy

• By harnessing wind energy

• By using solar panels

• By burning fossil fuels

Tags

NGSS.MS-PS3-5

What is the efficiency of modern hydropower plants in converting water's kinetic energy into electricity?

• 10%

• 95%

• 75%

• 50%

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-3

What is the function of generators in hydroelectric power plants?

• To control the flow of water

• To store potential energy

• To convert mechanical energy into electrical energy

• To prevent flooding

What do power transmission lines do in relation to hydroelectric power plants?

• Control the flow of water

• Convert mechanical energy into electrical energy

• Store potential energy

• Transport electricity to where it is needed

How can dam and hydroelectric power plant operators adjust the amount of electricity they are producing?

• By changing the flow rate of water

• By decreasing the amount of water falling

• By increasing the height of the dam

• By adding more turbines

Tags

NGSS.HS-ESS3-2

NGSS.HS-ETS1-2

NGSS.HS-PS3-3

What is one one disadvantage of hydroelectric energy?

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

• It doesn't work if it is not windy.

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

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

An advantage of hydroelectric power station.

• It produces thermal pollution

• Only a few dams have been built

• They produce no carbon dioxide when making electricity

• They are cheap to build

Tags

NGSS.HS-ESS3-1

NGSS.HS-ESS3-2

NGSS.HS-ESS3-4

In a hydropower plant, what turns to generate electricity?

• turbine

• generator

• penstock

Tags

NGSS.MS-ESS2-4

Where can tidal plants be installed?

• Inland rivers

• Mountainous regions

• Coastlines

• Desert areas

How does a tidal barrage generate electricity?

• By harnessing the energy of tidal currents

• By compressing air

• By utilizing the potential energy of the change in height between high and low tides

• By converting solar energy

Tags

NGSS.HS-PS3-3