Study of Weather | Chapter 3 | Answer Keys | Traverse | Geography for ICSE | Class 7

Answer Keys

A. Answer the questions given by choosing the most appropriate alternative.

1. Cloud cover is measured in ___________.

a.) oktas

b) cm

c) km

d) mb

Answer: a.) oktas

2. In West Bengal, strong winds with thundershowers are known as____________.

a) Loo

b) Kalbaisakhi

c) Fohn

d) Chinook

Answer: b) Kalbaisakhi

3. The word 'monsoon' originates from the _______________ word 'mausim'.

a) Chinese

b) Latin

c) Arabic

d) German

Answer: c) Arabic

4. Winds that always blow in the same direction, for the whole year are____________.

a) variable winds

b) periodic winds

c) permanent winds

d) local winds

Answer: c) permanent winds

5. When snow and rain fall together, it is called _______________.

a) mist

b) drizzle

c) sleet

d) dew

Answer: c) sleet

B. Fill in the Blanks.

1. The degree of hotness or coldness of the air is called _______________.

Answer: Temperature

2. ____________ is measured in grams per cubic meter of air.

Answer: Absolute Humidity

3. ________ refers to the amount of moisture or water vapor present in the air.

Answer: Humidity

4. The deflection of winds as a result of the Earth's rotation is called__________.

Answer: Westerlies

5. When the relative humidity is 100 percent, the air is said to be________.

Answer: Saturated

C. Write [T] for true and [F] for false.

1. A cyclone is associated with low pressure at the centre. [ True ]

2. Tamil Nadu gets rainfall in winter. [ True ]

3. Cloud cover is measured in oktas. [ True ]

4. The amount of solar energy received by the Earth is called insolation. [True]

5. Conventional rainfall occurs in the equatorial region. [ True ]