Correct answers are in RED

1. What are the 2 most abundant gases in the atmosphere

a. oxygen, nitrogen b. oxygen, water vapor

c. carbon dioxide, methane d. nitrogen, carbon dioxide

2. Connect the gas to the symbol (These have now been aligned)

(molecular) oxygen O₂

(molecular) nitrogen N₂

carbon dioxide CO₂

water H₂O

ozone O₃

3. Which gas’ concentration varies the most from place to place

a. oxygen b. water vapor c. nitrogen d. argon

4. Which molecule in the atmosphere protects surface creatures from UV radiation

a. oxygen b. water vapor c. nitrogen d. ozone

5. Where is most of this molecule located?

a. troposphere b. stratosphere c. mesosphere d. thermosphere

6. Which are the two most important greenhouse gases in the atmosphere

a. oxygen, nitrogen b. oxygen, water vapor

c. carbon dioxide, water vapor d. nitrogen, carbon dioxide

7. Which greenhouse gas concentration has been increasing due to fossil fuel burning?

a. oxygen b. nitrogen c. water vapor d. carbon dioxide

8. Temperature conversion: 40^oC is

a. 40 ^oF b.72^oF c. 80^oF e. 90^oF f. 104^oF

9. What is 40^oC in Kelvin (K)?

a. 273 b. 213 c. 313 d. 333 e. 104

10. What is the approximate standard atmospheric pressure at sea level in millibars?

a. 1000 b. 14.7 c. 100 d. 29

11. Approximately 25% of the atmosphere is above 11 km altitude. Therefore what is the approximate atmospheric pressure at 11 km altitude?

a. 1000 mb b. 750 mb c. 500 mb d. 250 mb

12. In what layer of the atmosphere does weather occur?

a. troposphere b. stratosphere c. mesosphere d. thermosphere

Use the map figure to the right to answer questions 13-18

13. What is the sea level surface pressure (in mb) 998.7

14. What is the surface air temperature (in ^oF) 31

15. What is the surface air dew point (in ^oF) 26

16. The approximate wind direction is

a. southeasterly b. northwesterly c. southerly d. westerly

17. What is the wind speed (in knots)?

a. 0 b. 10 c. 15 d. 20

18. Approximately what fraction of the sky is covered with clouds?

a. none b. 1/4 c. 1/2 d. 4/4

19. In the figure above, the weather front across New Mexico and Texas is a

a. cold front b. warm front c. stationary front d. occluded front

20. Connect the following types of Heat transfer with the descriptions (have been aligned)

Conduction	When two objects touch, heat is transferred from the hot object to the cold object.
Convection	Hot air rises, cold air sinks, transferring heat upward
Latent heat	Where water vapor condenses into a cloud, the atmosphere is warmed.
Radiation	Transfer of energy from a (red hot) campfire to people sitting around the campfire.

21. Which state of water is less ordered and more energetic?

a. water ice b. liquid water c. water vapor

22. If we increase the absolute temperature of an object by a factor of 10, the radiation energy emitted from the object increases by a factor of

a. 10 b. 100 c. 1,000 d. 10,000

Short Answers

23. Briefly explain how weather differs from climate

Extra credit

24. Explain how average daytime temperatures in Tucson are higher in June than in July, but July is the hottest month in Tucson.

25. The pressure in the figure for questions 12-18 is from Flagstaff which is approximately 2 km above sea level. Is the reported pressure the actual pressure one would measure at Flagstaff or that pressure converted to sea level altitude? Why?

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