What do people need to light their homes and drive cars?

• Water

• Energy

• Plants

• Animals

What are fossil fuels?

• Renewable energy sources

• Pollutants in the air

• Fuels that come from fossils under the ground

• Clean energy sources

What does burning fossil fuels do to the air?

• Cleans the air

• Makes the air dirty

• Has no effect on the air

• Adds oxygen to the air

What are two kinds of clean energy mentioned in the text?

• Coal and oil

• Wind power and hydro power

• Solar power and wind power

• Gas and biomass

What does "solar" mean?

• From the wind

• From the water

• From the sun

• From the earth

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What do solar panels on homes use to generate electricity?

• Wind

• Sunlight

• Water

• Geothermal heat

What is one way that solar power can be used in homes besides generating electricity?

• Cooling the air

• Heating water

• Cooking food

• Cleaning surfaces

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What is the purpose of wind turbines?

• To spin when the wind blows and make electricity

• To provide shade from the sun

• To measure the speed of the wind

• To produce solar power

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How tall can wind turbines be?

• As tall as a 5-story building

• As tall as a 10-story building

• As tall as a 20-story building

• As tall as a 50-story building

How long can the blades of a wind turbine be?

• More than 50 feet long

• More than 100 feet long

• More than 150 feet long

• More than 200 feet long