Drawing the Greenhouse Effect Conclusion

What is the greenhouse effect?

• The warming of a planet due to trapped gasses in the atmosphere.

• The cooling of Earth due to air pollution.

• The heating of a solid, such as a rock.

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Which of the following are greenhouse gases?

• Carbon Dioxide

• Methane

• Water Vapor

• All of these

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Without the "greenhouse effect“ which would be true?

• The Earth would catch on fire

• The Earth would cool to a point we could not live here

• The Earth would heat up drastically

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What do greenhouse gases do?

• act as a thermal blanket for the Earth, absorbing heat and warming the surface

• reflect Earth's incoming solar energy

• block the Sun's infrared radiation

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Which of the following could happen to light rays from the Sun as they hit Earths surface?

• They are absorbed by the land, air and ocean

• They are reflected back to space

• They are trapped by greenhouse gases in the Earth’s atmosphere.

• All of these

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Observe the amount of CO2 in the atmosphere from 400,000 years ago on the graph. What can you say has happened to the CO2 levels over that amount of time?

• They have steadily increased.

• They have steadily decreased.

• They have increased & decreased over time.

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Notice the current level of CO2 . How does it compare the levels of CO2 in the past?

• It is about the same as the rest of the graph

• It is much higher now than ever before.

• It is a little higher than in the past.

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