Greenhouse gases and global warming

12 questions

1. What do we call the natural process that helps keep Earth warm enough to live on?
2. What do the two parts of the word atmosphere describe? (atmo and sphere)
3. What is the main source of heating for Earth’s atmosphere?
4. Where are the greenhouse gases that keep the atmosphere warmer than it would be without them?
5. What proportion of climate scientists agree that global warming is caused by human activities?
6. What greenhouse gas is produced by burning fuels?
7. What is the average temperature of Earth’s surface?
8. How close is most of the atmosphere to Earth’s surface?
9. Which of these are **not** greenhouse gases?
10. What best describes the amount of water vapour in the atmosphere?
11. Which human activity does **not** produce large amounts of methane?
12. Order these greenhouse gases, starting with the one that is causing most global warming.

License: OGL