6.1 Introduction to the atmosphere Quiz
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5 questions, one answer each
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1. Where does air sink in the Hadley cell?
- A. At the equator
- B. At about 30° N and S
- C. At 60° N and S
- D. At the poles only
2. Which Milankovitch cycle has a period of about 41 000 years?
- A. Eccentricity
- B. Obliquity (axial tilt)
- C. Precession
- D. Solar flares
3. (HL) Why is atmospheric pressure lower at 5.5 km?
- A. Gravity pulls air towards the surface, so there are fewer molecules above
- B. The air is hotter
- C. Oxygen is used up
- D. The Sun is closer
4. (HL) What did early photosynthetic bacteria add to the atmosphere?
- A. Methane
- B. Oxygen
- C. Nitrogen
- D. Argon
5. Which gas has the highest GWP of those listed?
- A. Carbon dioxide
- B. Methane
- C. Nitrous oxide
- D. Water vapour