Climate Change

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

What is climate?

• A long period of time. 
• Atmospheric conditions of a place at a particular point in time. 
• Average atmospheric conditions of a place over a long period of time, usually 30 years. 
• Current weather outlook of a place. 

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. 

What type of heat do greenhouse gases trap?

• Shortwave radiation
• Microwave electromagnetic radiation 
• Longwave radiation
• Radio waves electromagnetic radiation

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

Limited levels of carbon dioxide and methane are recommended to be in the atmosphere to retain heat.  

• True
• False

The enhanced greenhouse effect is the increase in global temperatures due to an increase in atmospheric greenhouse gases. 

• True
• False

What is another term for enhanced greenhouse effect?

• Global cooling
• Global freezing
• Global barbecue 
• Global warming