Climate Change Practice Test

Which of the following are considered the major greenhouse gases?

• water vapor and ozone
• water vapor and carbon dioxide
• ozone and carbon dioxide
• ozone and methane

Which of the following is the best conclusion that can be made from this graph?

• Atmospheric carbon dioxide levels have been decreasing since 1960
• Hawaii has a lot of carbon dioxide
• Humans have been working hard to decrease carbon dioxide levels
• Atmospheric carbon dioxide levels have increased steadily since 1960s. 

Which of the following is NOT a greenhouse gas?

• Carbon dioxide
• Methane
• Water vapour
• Nitrogen

The most abundant greenhouse gas is _____.

• carbon dioxide
• water vapour
• methane
• nitrous oxide

The greenhouse effect is beneficial as it helps to sustain life on earth by naturally trapping heat in the atmosphere. 

• False
• True

How can deforestation NOT lead to an increase in atmospheric carbon dioxide and climate change as a result?

• Setting forest fires to clear forests rapidly for agricultural activities release carbon dioxide due to combustion. 
• The loss of forests as a carbon sink i.e. forests absorb carbon dioxide during photosynthesis. 
• The loss of oxygen which makes the earth warmer, as forests contribute oxygen to the atmosphere during photosynthesis. 
• Carbon oxidation whereby carbon in exposed soil (without vegetation cover) reacts with oxygen to produce carbon dioxide. 

The burning of fossil fuels (eg. coal, gas, and oil results in the release of  __________.

• Oxygen
• Methane
• Carbon dioxide
• Nitrogen

Climate change can lead to _______________.

• sea level rise and floods in coastal areas
• droughts
• spread of dengue fever and malaria
• all of the above

Climate change can affect the growing season of crops, which can result in both increase in food supply and food shortages at the same time. 

• True
• False

Global average warming is the result of

• The Ozone Hole
• Natural Earth Climate Cycles
• A Human-Caused Increase in Greenhouse Gases
• Aliens