Hydroelectric Power Quiz

What percentage of global energy was produced by hydroelectric power in 2015?

• 12%

• 10%

• 7%

• 5%

Which of the following is NOT an advantage of hydroelectric power?

• It is low maintenance

• It is reliable

• It is renewable

• It is inexpensive to build

What is a major environmental disadvantage of hydroelectric power?

• It can only be built in specific places

• It is unreliable

• It releases greenhouse gases

• It is not renewable

Which type of hydroelectric power involves capturing energy from rising and falling tides?

• Solar power

• Tidal power

• Pumped storage system

• Storage in a lake

What distinguishes a primary energy source from a secondary one in hydroelectric power?

• Secondary sources are renewable

• Primary sources capture energy directly from nature

• Secondary sources are more efficient

• Primary sources require human intervention

What is the role of gravitational potential energy in hydroelectric power?

• It is used to calculate energy output

• It is only used in tidal power

• It is irrelevant

• It is a secondary energy source

In a hydroelectric power problem, what is typically given instead of mass?

• Height

• Volume

• Density

• Area

How is the average height of water determined in a container for energy calculations?

• It is the height of the pipe

• It is twice the total height

• It is half the total height

• It is the total height

What is the efficiency of a dam if it captures 40% of the potential energy?

• 0.6

• 0.8

• 0.4

• 0.2

In a pumped storage system, what additional height is considered for energy calculations?

• Only the height of the container

• None of the above

• Only the height of the pipe

• The sum of the container and pipe heights