1. If 1 kg of 25°C air with 10 grams of water in it is cooled to -10°C, how much

Question

1. If 1 kg of 25°C air with 10 grams of water in it is cooled to -10°C, how much water condenses?

a. 10g

b. 2g

c. 23g

d. 8g

2. If 1 kg of saturated 95°F air is cooled to 5°C, how much water condenses?

a. 10g

b. 3.5g

c. 30g

d. 26.5g

3. On a weather map a barometric pressure of 055 means

a. 955 mb

b. 905.5mb

c. 1005.5 mb

4. If the distance between wave troughs in a deep-water wave is 160 feet, the wave will start to break when the water depth is

a. 40 ft

b. 10 ft

c. 8 ft

d. 2 ft

5. What is the dew point temperature of 1 kg of air at 10°C with 2 g of water vapor in it?

a. 5 C

b. -10 C

c. about -5 C

d. -20 C

6. In a mid-latitude cyclone, when a warm front passes

a. winds shift from the west to the southwest.

b. barometric pressure rises.

c. winds shift from the south-southeast to the southwest.

7. In a mid-latitude cylcone, when an occluded front passes

a. wind shifts from southwesterly to west-northwesterly.

b. winds shift form southeasterly to northwesterly.

c. the barometric pressure does not change.

Explanation / Answer

1. according to psycometric chart when the air is cooled to -10 degree celcius air can hold around 2 gm of water thus amount of water that condenses is 10-2 = 8 gm

2. using the psycometric chart when air is saturated then at 95 degree F ie at 35 degree C it can hold maximum of 0.035 kg of water. Thus and when it is at 5 degree celcius it can hold 0.005 kg water. Thus amount of water that will condense = 0.035-0.005= 0.030= 30 gm

3. It means 1005.5 mb

4. 40 ft . water will break when depth = 1/4 of the length = 160/4 = 40 ft

3.

3.

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