Earth's Changing Climate

More energy entered the Earth system than exited. How could the amount of methane have changed to cause this, and what effect would this have on energy in the Earth system?

• Methane increased, leading to more energy in the Earth system because more exiting energy was redirected (bounced) back toward Earth.

• Methane increased, leading to more energy in the Earth system because more energy was trapped by gases and held in the atmosphere.

• Methane decreased, leading to less energy in the Earth system because less exiting energy was redirected (bounced) back toward Earth.

• Methane decreased, leading to less energy in the Earth system because less energy from the sun was redirected (bounced) back toward outer space.

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Some factories have started using large tanks of bacteria to remove carbon dioxide from the atmosphere. That means the amount of carbon dioxide in the atmosphere could decrease over time. If this happens, and if the energy coming from the sun and the amount of carbon dioxide being put into the atmosphere otherwise stay the same, what would happen to the total amount of energy in the Earth system and to the global average temperature?

• The total amount of energy in the Earth system would increase, and the global average temperature would rise.

• The total amount of energy in the Earth system would decrease, and the global average temperature would fall.

• The total amount of energy in the Earth system would remain the same, and the global average temperature would remain constant.

• The total amount of energy in the Earth system would increase, but the global average temperature would fall.

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Increased carbon dioxide may cause global warming by trapping more ____________ in the atmosphere.

• water

• gases

• heat

• water vapor

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The gradual increase in the temperature of the atmosphere is known as ___________________.

• sunspots

• global warming

• ice ages

• arid

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The conditions in an area over a long period of time?

• Climate

• Weather

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Climate change causes extreme weather conditions such as:

• Flooding

• Heat Waves

• Hurricanes

• All of the above

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97% of scientists believe what is causing climate change?

• Animals and Plants

• Eco-Friendly Cars

• Humans

• Conservation of energy

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If less energy entered than exited the Earth's System, what is true about the amount of carbon dioxide or methane in the atmosphere?

• Carbon dioxide or methane stayed the same

• Carbon dioxide or methane decreased

• Carbon dioxide or methane increased

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The weather conditions in an area in general or over a long period.

• Climate change

• Energy

• Temperature

• Climate

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If carbon dioxide in the atmosphere decreases, the amount of energy absorbed by Earth's surface will...

• stay the same

• be unpredictable

• increase

• decrease

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