GCSE Physics - Hydroelectricity and Tidal Barrage #13

What is the primary difference between a hydroelectric dam and a tidal barrage?

• The cause of water level difference

• The location where they are built

• The type of water they use

• The method of electricity generation

How is gravitational potential energy converted into electricity in these systems?

• By heating water to produce steam

• By using solar panels

• By spinning turbines with water flow

• By using wind turbines

Which of the following is a benefit of using hydroelectric dams and tidal barrages?

• They are cheap to set up

• They have low running costs

• They are unreliable

• They produce a lot of pollution

What is a major environmental concern associated with hydroelectric dams?

• They increase air pollution

• They can flood large areas

• They deplete fish populations

• They cause earthquakes

Why might the initial setup of these systems be considered a disadvantage?

• They are expensive to build

• They require a lot of land

• They need constant maintenance

• They take a long time to construct