15.2 Hydropower Vocabulary

What is hydropower?

• Electricity generated from the power of moving water.

• Energy stored in a battery.

• Heat energy from the sun.

• Wind energy converted into electricity.

What does gravitational potential energy refer to in the context of hydropower?

• The energy due to the motion of water.

• The energy an object possesses due to its position in a gravitational field.

• The energy generated by a turbine.

• The energy lost as heat.

What is the role of a dam in a hydropower system?

• To generate electricity directly.

• To obstruct the flow of water and create a reservoir.

• To convert kinetic energy into mechanical energy.

• To measure the flow rate of water.

What is a turbine used for in a hydropower system?

• To store water.

• To measure pressure.

• To convert kinetic energy of the fluid into mechanical energy.

• To increase the gravitational potential energy.

What does the term "head" refer to in the context of hydropower?

• The speed of the water flow.

• The vertical distance between the water surface and the point where water flows out.

• The amount of water stored in the reservoir.

• The efficiency of the turbine.

What is a trial in the hydropower experiment?

• A summary of the experiment

• An educated guess about the outcome

• Each repetition of the experiment with a different water level

• The information collected during the experiment

What is a variable in an experiment?

• Something that remains constant

• Something that can change in an experiment

• A summary of the experiment

• The information collected during the experiment

What does data refer to in an experiment?

• An educated guess about the outcome

• The information collected during the experiment

• Each repetition of the experiment

• A device that converts energy

What is a prediction (hypothesis) in an experiment?

• A summary of the experiment

• An educated guess about what will happen

• The information collected during the experiment

• A device that converts energy

What is the role of a generator in a hydropower plant?

• To measure water levels

• To convert mechanical energy into electrical energy

• To record observations

• To summarize the experiment