Answer the questions given by choosing the most appropriate alternative.

1. Cloud cover is measured in _______________.
   1. oktas
   2. cm
   3. km
   4. mb
2. In West Bengal, strong winds with thundershowers are known as _______________.
   1. Loo
   2. Kalbaisakhi
   3. Fohn
   4. Chinook
3. The word 'monsoon' originates from the _____________ word 'mausim'.
   1. Chinese
   2. Latin
   3. Arabic
   4. German
4. Winds that always blow in the same direction, for the whole year are _____________.
   1. variable winds
   2. periodic winds
   3. permanent winds
   4. local winds
5. When snow and rain fall together, it is called _____________.
   1. mist
   2. drizzle
   3. sleet
   4. dew

Fill in the blanks.

1. The degree of hotness or coldness of the air is called ________________.
2. _________________ is measured in grams per cubic metre of air.
3. _________________ refers to the amount of moisture or water vapour present in the air.
4. The deflection of winds as a result of the Earth's rotation is called ______________.
5. When the relative humidity is 100 per cent, the air is said to be ______________.

Write (T) for true and (F) for false.

1. A cyclone is associated with low pressure at the centre.
2. Tamil Nadu gets rainfall in winter.
3. Cloud cover is measured in oktas.
4. The amount of solar energy received by the Earth is called insolation.
5. Convectional rainfall occurs in the equatorial region.

Differentiate between Weather and Climate.

Differentiate between Humidity and Precipitation.