Unit 2: The Atmosphere - Gases in the Atmosphere
- Created by: rosieevie
- Created on: 01-11-13 21:44
Other questions in this quiz
2. Why has the percentage of hydrogen decreased from the early atmosphere to now?
- It has been trapped underground
- It's escaped from the atompshere
- It dissolved in oceans and rivers
- Human activity
3. How does nitrogen support life?
- Used in respiration
- Blocks harmful UV rays
- Used as nutrients for plants
- Used in photosynthesis
4. Why do carbon dioxide levels rise at night?
- Increased burning of fossil fuels
- Plants don't photosynthesise
- Plants photosynthesise less
- Humans breathe more
5. Why are the water vapour levels higher in summer?
- Hotter average temperatures and more average rainfall
- Hotter average temperatures and less average rainfall
- Longer day hours and less average rainfall
- Hotter average temperatures and longer day hours
Comments
No comments have yet been made