Greenhouse Effect

What is the greenhouse effect?

• The natural warming of the earth due to gases trapping heat from the sun

• The cooling of the earth due to gases reflecting sunlight

• The increase in plant growth due to more carbon dioxide

• The effect of greenhouse gases on plant photosynthesis

What causes the greenhouse effect?

• The increase in oxygen levels in the atmosphere

• The reflection of all solar energy back into space

• The cooling of the earth's surface by the atmosphere

• The absorption and re-radiation of heat by atmospheric gases

Which gas is primarily responsible for the increase in global warming?

• Oxygen

• Nitrogen

• Carbon dioxide

• Argon

What is the concentration of CO2 in the atmosphere as of 2023?

• 280 parts per million

• More than 420 parts per million

• 400 parts per million

• 200 parts per million

Which of the following is NOT a greenhouse gas?

• Nitrous oxide

• Oxygen

• Methane

• Water vapor

What is the global warming potential (GWP) of methane compared to carbon dioxide over a 100-year period?

• 40 times greater

• 30 times greater

• 20 times greater

• 10 times greater

Which greenhouse gas has the highest GWP?

• Fluorinated gases

• Nitrous oxide

• Methane

• Carbon dioxide

What is radiative forcing (RF)?

• The measure of the sun's energy reflected by the earth

• The measure of the sun's energy absorbed by the earth

• The difference between absorbed and released energy due to climate drivers

• The measure of the earth's energy emitted into space

What percentage of human-caused greenhouse gas emissions is carbon dioxide responsible for?

• 50 percent

• 60 percent

• 70 percent

• 80 percent

Which human activity is the largest single source of greenhouse gas emissions?

• Transportation

• Industrial processes

• Agriculture

• Electricity and heat production