Question

1. Multiple Choice Questions: Tick the correct answer.

1. Imaginary lines joining places of same atmospheric pressure above sea level is called:
(a) isobars.
(b) isotherms.
(c) isohyets.
(d) isotopes.

2. The layer of the atmosphere which is rich in ozone:
(a) mesosphere.
(b) stratosphere.
(c) exosphere.
(d) thermosphere.

3. Loo is an example of:
(a) permanent winds.
(b) periodic winds.
(c) variable winds.
(d) local winds.

4. The temperature at which air gets saturated:
(a) boiling point.
(b) melting point.
(c) saturation point.
(d) dew point.

5. The study of weather:
(a) climatology
(b) astrology
(c) astronomy
(d) meteorology

II. Fill in the blanks by choosing the correct options.

1. The envelope of air surrounding the Earth is called______
(a) biosphere
(b) atmosphere

2. The amount of moisture present in air is called_______.
(a) humidity
(b) temperature.

3. winds which blow over a particular period of Time over a particular area are called ______.
(a) parmanent winds
(b) periodic winds

4.Lines joining places of equal rainfall are called _________.
(a) isobars
(b) isohyets

5. _______is used for finding the direction of wind.
(a) wind vane
(b) Anemometer​

Answer 1

Answer:

4no answer was: melting point

Answer 2

1. Imaginary lines joining places of the same atmospheric pressure above sea level are called: (a)Isobars.

• The isobars are also called contours.
• The horizontal distribution of pressure is shown by isobars.

2. The layer of the atmosphere which is rich in ozone: (b) stratosphere.

• The air layer at an altitude of 18 km to 50 km above the troposphere is called the stratosphere.
• Ozone gas is found in the upper part of the stratosphere up to an altitude of 24 km - 40 km. This is why this part is called the ozonosphere. This layer absorbs the ultraviolet rays from the sun and protects the animal kingdom from destruction.

3. Loo is an example of (b) periodic winds.

• The Loo is a strong, dusty, gusty, hot, and dry summer wind from the west which blows over the western Indo-Gangetic Plain region of North India and Pakistan.
• It is especially strong in the months of May and June.

4. The temperature at which air gets saturated: (d) dew point.

• This figure depends on two factors: air temperature and relative humidity.
• The higher the dew point of the gas, the higher the relative humidity, meaning it is closer to the temperature in the actual environment. Conversely, the lower the humidity, the lower the dew point.

5. The study of weather: (d) meteorology.

• Meteorology is a branch of atmospheric science that includes atmospheric chemistry and atmospheric physics and focuses on weather forecasting.
• Although the study of meteorology is more than a millennium old, no significant progress has been made in meteorology until the eighteenth century.

1. The envelope of air surrounding the Earth is called (b) atmosphere

2. The amount of moisture present in the air is called (a) humidity

3. winds that blow over a particular period of time over a particular area are called (b) periodic winds

4. Lines joining places of equal rainfall are called (b) isohyets

5. (b) Anemometer​ is used for finding the direction of the wind.

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