Climate Change

What are greenhouse gases?

• gases that cause climate change
• gases that emit green smoke
• gases that are used to make green colored glass

The average temperature of the surface of Earth has increased approximately 1°C in the past century. Which reason best explains this increase in temperature?

• lower levels of ozone in the atmosphere
• lower levels of nitrogen in the atmosphere
• higher levels of carbon dioxide in the atmosphere
• higher levels of oxygen in the atmosphere

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 1960

Which of the following have been linked to climate change?  

• droughts
• flooding
• melting of polar ice caps
• all of the above

Some greenhouse gases are naturally present in the Earth's atmosphere

• True
• False

Worldwide, temperatures have been increasing for more than 100 years.  Is this evidence of global warming?

• yes
• no

Melting of glaciers and polar ice caps....

• will result in cooler temperatures in the Arctic
• will result in sea-levels rising
• Will have no effect on ecosystems
• None of the above

What is the definition of weather?

• a period of abnormally dry weather that lasts at least 2 years
• the specific condition of the atmosphere at a particular place and time
• a complex community of organisms and the community's environment
• a release of toxic gas

Carbon is stored in

• Trees and other living things
• Oceans
• underground in soil and fossil fuels
• All are correct

Changes from minute-to-minute, hour-to-hour, day-to-day

• Climate
• Weather