Impact on Climate

The carbon dioxide concentration in the year 2000 was measured at 370 ppm. Scientific models predict that the atmospheric carbon dioxide level will increase to 500 ppm in the year 2050. Based on the trends in the graphs, will the air temperature be higher or lower in 2050 than it was in 2000?

• Higher

• Lower

• Stay the same

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In the 1970s, sea ice covered 10.8 million square kilometers of the Arctic Ocean. In 2010, sea ice covered 8.7 million square kilometers of the Arctic Ocean. How might the decrease in sea ice affect Earth's atmospheric temperature in the future?

• Decrease temperature

• Increase temperature

• No change in temperature

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Predict what might happen to the temperature in a given region if a glacier were to start melting.

• Temperature would decrease at a constant rate.

• Temperature would increase faster over time.

• Temperature would decrease faster over time.

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What is the relationship between temperature and solar activity?

• Increased solar activity leads to increased temperature.

• Temperature and solar activity are not related.

• Decreased solar activity leads to decreased temperature.

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Describe the relationship between carbon dioxide levels and average global temperatures.

• As carbon dioxide levels increase, temperature increases.

• As carbon dioxide levels increase, temperature decreases.

• As carbon dioxide levels decrease, temperature increases.

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How does the water temperature affect the amount of carbon dioxide that can dissolve in the ocean?

• The warmer the water temperature, the more CO2 that can dissolve in the ocean.

• The cooler the water temperature, the less CO2 that can dissolve in the ocean.

• The warmer the water temperature, the less CO2 that can dissolve in the ocean.

How does the level of carbon dioxide affect the level of water vapor in the atmosphere?

• More carbon dioxide, more water vapor.

• More carbon dioxide, less water vapor.

• Less carbon dioxide, more water vapor.

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Is the melting of Arctic ice an example of positive feedback or negative feedback?

• Positive

• Negative

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Based on what we have learned, what is going to happen to earth's climate in the next 100 years?

• The climate will begin to cool

• The climate will remain unchanged

• The climate will continue to warm

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What is causing this change in climate?

• Increased CO2 emissions

• Increased temperature

• Increased water vapor

• Increased ice melt

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