Energy Strand 7

The picture below shows a turbine generator used to produce electricity at a geothermal power plant.
Electricity is produced by using steam to _____________.

• heat the turbine generators

• spin the turbine generators 

• reduce friction in the turbine generators

• reduce emissions from the turbine generators

How does a coal power plant make electricity?

• Coal gives off electrons when burned making electricity.

• Coal power plants do not make electricity

• The coal is burned heating water to steam turning a turbine.

• The burning coal heats an electric motor making electricity

How does a natural gas power plant make electricity?

• Natural gas gives off electrons when burned making electricity.

• Natural gas power plants do not make electricity

• The natural gas is burned heating water to steam turning a turbine.

• The natural gas heats an electric motor making electricity

What is the job of the generator in a coal power plant?

• Use electrical energy to turn a turbine.

• Convert electrical energy into mechanical energy

• Turn the turbine which changes water into steam

• To change mechanical energy into electrical energy

What is the job of the turbine in a coal power plant?

• To pump water to cool the power plant

• Convert the motion of the steam to mechanical energyr plant

• To change the heat of the steam into electrical energy

• Coal power plants do not have turbines.

When water is heated in a coal power plant its volume_____ moving a turbine.

• increases 

• stays the same

• decreases

• varies

After the water drives the turbine in a coal power plant it has …

• less energy changing back to liquid water

• less energy changing from liquid water to steam

• more energy changing back to liquid water

• more energy changing from liquid water to steam