Earth's Changing Climate Review

If there is more carbon dioxide in the atmosphere then

• less energy will enter than exit

• more energy will enter than exit

• temperatures will decrease

• energy will be in balance

If there is less methane in the atmosphere then

• temperatures will decrease

• temperatures will increase

• more energy will enter than exit

• energy will be in balance

Which of the following will redirect energy towards the Earth?

• Oxygen

• Nitrogen

• Methane

• Hydrogen

How can global warming cause sea levels to rise?

• By increasing undersea volcanic eruptions

• By creating severe storms

• By melting glaciers and polar ice caps

Which of the following is a fossil fuel?

• firewood

• dead leaves

• gasoline

• wind

How do cows and other livestock affect the climate?

• They eat trees and grass.

• Their digestive system produces methane.

• Humans use fossil fuel to cook the meat

• They have high body temperatures.

Energy enters the Earth system

• from firewood

• from the moon

• from the sun

• from fossil fuels

Carbon dioxide and methane

• allow the energy to go through the atmosphere.

• stop some outgoing energy from leaving the Earth system.

• cool the atmosphere.

• make the sun shine more brightly.

Which individual action would do the most to reduce atmospheric methane?

• planting a tree

• riding a bus instead of driving a car

• switching to rechargeable batteries

• eating less meat

Compared to other climate changes in Earth's history, what is different about the one happening now?

• this one is a warming trend.

• this one is a cooling trend.

• this one is caused by the amount of solar energy.

• this one is occurring faster.