Renewable Resources

A machine with blades that turns because of wind or water.

• Turbine

• Power plant

• Lawnmower

This form of electrical energy generating is called...

• Hydroelectric energy

• Geothermal energy

• Solar energy

• Wind energy

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Two disadvantages of wind energy out of the choices below are...

• Wind farms need to be built in a large and open area.

• It doesn't pollute air.

• Some wind turbines can be noisy when their blades spin quickly.

• It causes water pollution.

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Two advantages of geothermal energy out of the choices below are ...

• It does not emit any harmful pollutants into the air.

• It needs electricity to power the pump.

• High installment costs to built power plants.

• It is a continuous supply.

What is the best description for geothermal energy?

• Geothermal energy is the heat that is found in caves.

• Geothermal energy is the heat that is found inside the Earth.

• Geothermal energy is the heat that is found in space.

• Geothermal energy is the heat that is found in the surface of the Earth.

Two advantages of solar energy out of the choices below are...

• Solar panels don't make any noise.

• It is free energy supply (after purchasing the panels).

• It works constantly at all times.

• Some solar panels contain toxic materials which are safe for the environment.

Two disadvantages of hydroelectric energy out of the choices below are...

• The supply is abundant in nature.

• It doesn't pollute air environment.

• Dams block sediment from continuing down a river.

• The initial installment of hydropower plant can destroy wildlife habitats.

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The picture attached is showing how hydroelectric works to generate electricity. Which of the following is the best description for step number 2?

• The force of falling water pushing against the generator causes the generator's blade to spin.

• The force of the falling water turns the turbine to produce electric energy.

• The force of falling water pushing against the turbine causes the turbine's blade to spin.

• The force of falling water pushing against the turbine causes the heat pumped to the surface of the Earth.

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The picture attached is showing how solar energy works to generate electricity. Which of the following is the best description for step number 1?

• The panels are used as decoration.

• The panels measure the amount of electricity produced.

• When the sun shines, energy from the sunlight is absorbed by the panels.

• The panels are used to store excess electric energy and draw it when it’s needed.

Although geothermal energy is better than fossil fuels, the process of pumping water underground can cause small earthquakes that damage roads. In which step does this process happen?

• Step 1

• Step 2

• Step 3

• Step 4

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