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