1) The ___________________________ is a process that occurs when gases in Earth's atmosphere trap the Sun's heat. a) ice age b) greenhouse effect c) photosynthesis d) cellular respiration 2) Carbon dioxide is an example of a a) greenhouse gas b) atom c) element d) ocean current 3) What do greenhouse gases do? a) cool the Earth b) block the Sun c) trap heat energy 4) At night, Earth's surface a) releases heat energy b) gathers heat energy c) warms up 5) Carbon dioxide is important to Earth when it is present in the correct amounts. a) true b) false 6) Carbon dioxide and greenhouse gasses become a problem when they increase too quickly. a) true b) false 7) Carbon dioxide is always good for Earth. a) true b) false 8) Burning fossil fuels ____________ greenhouse gases. a) decreases b) doesn't change c) increases 9) What can help decrease the greenhouse effect? a) plants b) animals c) gas powered cars d) coal powered electric plants 10) When the ocean absorbs carbon dioxide it becomes a) a different color b) colder c) more basic d) more acidic 11) We can't do anything to stop the greenhouse effect from getting worse. a) true b) false

Greenhouse Effect

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