OD3 - Unit 9: Grammar 1

1. Wind power is a clean __________ of energy.

• fossil fuels

• renewable

• source

2. Oil and coal are _______________.

• nonrenewable

• fossil fuels

• renewable

3. Fossil fuels are ______________ resources.

• source

• nonrenewable

• solar panels

4. The sun and wind are ___________ source.

• renewable

• nonrenewable

• steam

5. A _______________ uses the wind to move across the water.

• sailboat

• natural gas

• wind farm

6. We use _____________ to light our homes

• wind turbine

• electricity

• power plant

7. Burning coal makes air ____________.

• oil

• natural gas

• pollution

8. We make energy in a ____________.

• power plant

• sailboat

• coal