1. Name the three forms in which water is present in the atmosphere. What are the two main processes that add moisture to it? (Pg. 1) Page 86
2. What is meant by ‘saturated air’? What is the ‘dew point’? (Pg. 1) Page 86
3. What conditions favour a higher rate of evaporation? (Pg. 1) Page 86
4. List the forms that condensation can take after the dew point is reached. (Pg. 2) Page 87
5. Differentiate between fog and mist. What is smog? (Pg. 2) Page 87
6. Name and describe the four basic cloud types based on their height, shape, and appearance. (Pg. 2-3) Page 87-88
7. What is precipitation? Name the different forms it can take. (Pg. 3) Page 88
8. Describe the formation of hailstones. (Pg. 3) Page 88
9. Explain the process of Orographic or Relief rainfall. What is a ‘rain-shadow area’? (Pg. 4) Page 89
10. State the general patterns of world rainfall distribution with respect to latitude, coastal vs. interior areas, and windward vs. leeward sides. (Pg. 4) Page 89

What is the term for the actual amount of water vapour present in a unit volume of air? (Pg. 1)

The main cause for the process of evaporation is: (Pg. 1)

Condensation in free air results from cooling around small particles known as: (Pg. 1)

What is deposited when condensation occurs on cooler solid surfaces with dew point above freezing? (Pg. 2)

What is a cloud with its base at or very near the ground called? (Pg. 2)

Which clouds are thin, detached, feathery, and formed at very high altitudes (8,000-12,000m)? (Pg. 2)

Which clouds are black or dark gray, very dense, and opaque? (Pg. 2-3)

What is precipitation in the form of fine flakes of snow called? (Pg. 3)

On the basis of origin, how many main types of rainfall are identified? (Pg. 3)

Which slope of a mountain receives greater rainfall in orographic precipitation? (Pg. 4)

Which regions receive heavy rainfall of over 200 cm per annum? (Pg. 4)

(Exercise) Which one of the following processes is responsible for transforming liquid into vapour? (Pg. 5)

(Exercise) The air that contains moisture to its full capacity is called: (Pg. 5)

(Exercise) Which one of the following is the highest cloud in the sky? (Pg. 5)

The percentage of moisture present compared to the air’s full capacity at a given temperature is called ______ humidity. (Pg. 1) Page 86

The transformation of water vapour into water is called ______. (Pg. 1) Page 86

The most favourable condition for condensation is the ______ in air temperature. (Pg. 1-2) Page 86-87

When condensation takes place below freezing point, forming minute ice crystals, it is called ______. (Pg. 2) Page 87

Clouds are masses of minute water droplets or ice crystals formed by the ______ of water vapour in free air. (Pg. 2) Page 87

Cumulus clouds look like ______ and have a flat base. (Pg. 2) Page 87

Layered clouds covering large portions of the sky are called ______ clouds. (Pg. 2) Page 87

Frozen raindrops or refrozen melted snow-water that falls as small ice pellets is called ______. (Pg. 3) Page 88

Rainfall caused when heated air rises, expands, cools, and condenses is called ______ rain. (Pg. 3) Page 88

The area on the leeward side of a mountain that gets less rainfall is known as the ______ area. (Pg. 4) Page 89

Areas in high latitudes and rain-shadow zones receive very low rainfall, less than ______ cm per annum. (Pg. 4) Page 89

(Exercise) The three types of precipitation are rain, snow, and ______. (Pg. 5) Page 90