Global Warming

Which atmospheric gas is considered the "main" greenhouse gas?

• argon

• carbon dioxide

• oxygen

• nitrogen

Which of the following best describes how most light rays interact with the atmosphere

• They bounce off the gases in the atmosphere

• They are absorbed by gases in the atmosphere

• They are reflected by gases in the atmosphere

• They travel through gases in the atmosphere

Check all the apply: What happens to light rays as they strike the ground

• They are reflected

• They are absorbed

• They are transformed into heat

• They are used in cellular respiration

Which of the following best describes heat rays interactions with gases in the atmosphere

• Heat rays bounce off all gases in the atmosphere

• Heat rays bounce off greenhouse gases in the atmosphere

• Heat rays are absorbed by all gases in the atmosphere

• Heat rays are absorbed by greenhouse gases in the atmosphere

As greenhouse gases increase in the atmosphere....

• More heat gets trapped on Earth which causes warming

• More light gets reflected into space which causes cooling

• More light gets trapped on Earth which causes warming

• More heat gets reflected into space which causes cooling

Which process in the carbon cycle has lead to the increasing trend seen in the above graph?

• Combustion

• Dissolving

• Photosynthesis

• Respiration

As greenhouse gases increase in the atmosphere....

• More heat gets trapped on Earth which causes warming

• More light gets reflected into space which causes cooling

• More light gets trapped on Earth which causes warming

• More heat gets reflected into space which causes cooling

Which process in the carbon cycle has lead to the increasing trend seen in the above graph?

• Combustion

• Dissolving

• Photosynthesis

• Respiration

Check all that apply: Which of the following are consequences of massive deforestation, by burning, of rainforests worldwide?

• Increase carbon emissions into the atmosphere

• Decrease carbon absorption by photosynthesis

• Fewer greenhouse gases in the atmosphere

• Global warming

• Global cooling

In the northern hemisphere, as trees grow new leaves in the spring/summer, what happens to carbon dioxide concentrations in the atmosphere?

• They increase

• They decrease

• They stay constant