G7CB UNIT 10 - E7

Wind and solar power are examples of _________ sources of energy, which means they can be used again and again.

• limited

• renewable

• harmful

• polluting

Burning fossil fuels releases _________ into the atmosphere, a gas that causes global warming.

• carbon dioxide

• solar panel

• electricity

• biogas

Solar energy is collected using a _________, a device placed on rooftops to catch sunlight.

• hydro plant

• solar panel

• nuclear reactor

• windmill

_________ is a fossil fuel that is black, solid, and often used in power plants.

• Coal

• Biogas

• Wind

• Nuclear

Biogas is a clean and renewable source of _________, which is made from organic waste.

• oil

• electricity

• wind

• natural gas

Electricity can be generated from _________ power, using the energy of flowing water.

• coal

• hydro

• biogas

• oil

Nuclear energy can be dangerous because it creates _________ waste, which can damage the environment.

• renewable

• limited

• abundant

• harmful

Fossil fuels are _________ and cause air pollution when burned.

• safe

• polluting

• renewable

• alternative

Energy from the sun is called _________ energy, which is collected during the daytime.

• nuclear

• hydro

• solar

• biogas

Wind turbines are used to _________ electricity by using wind power.

• burn

• create

• protect

• produce