Which sources of energy don't pollute the air or water?
Renewable
............ is a mineral and we burn it to obtain thermal and electric energy.
Coal
Name one source of nonrenewable energy?
Coal, natural gas, petroleum and uranium
Which type of energy is also called clean energy?
Renewable source
What are these?
Solar panels
What do we call this?
Wind turbine
Which type of energy comes from water in rivers and reservoirs?
Hydropower
Which sources of energy are natural resources that cannot be replaced after they are used?
Nonrenewable
