This is a picture of Kalbaisakhi, a local thunderstorm that blows in West Bengal. The word means 'calamity in the month of Baisakh'.

Find out the names of three similar local thunderstorms in India. Write their names in the blanks provided:

1. _____________________.
2. _____________________.
3. _____________________.

Choose the correct answer from the given options.

1. The unit of measuring rainfall is
   1. Celsius.
   2. centimetres.
   3. metres.
   4. bar.
2. Isohyets are lines joining places
   1. getting same amount of rainfall.
   2. having equal pressure.
   3. with equal temperature.
   4. experiencing equal wind speeds.
3. Which of the following statements are correct about the pressure condition?
   1. High pressure areas are associated with calm weather conditions.
   2. Pressure is measured by anemometer.
   3. Low pressure areas are associated with unsettled and stormy weather conditions.
   4. Pressure increases with altitude of a place.

Which of the following options is correct?

1. A and B are correct.
2. B and C are correct.
3. A and C are correct.
4. B and D are correct.

4. Which of the following are correctly matched?

Which option is correct?

1. A. and 1. are correct
2. B. and 2. are correct
3. C. and 3. are correct
4. D. and 4. are correct.

5. Two statements are given in the question below as Assertion (A) and Reason (R). Read the statement and choose the appropriate option: Assertion (A): Weather forecast is the prediction of weather conditions. Reason (R): Weather forecasts help in ocean navigation and fishing.
   1. Both (A) and (R) are true but (R) is not the correct explanation for (A).
   2. Both (A) and (R) are true and (R) is the correct explanation of (A).
   3. (R) is true but (A) is false.
   4. (A) is true but (R) is false

Deserts have very hot days and equally cold nights. Give reasons.

Winter in Delhi is severe while in Chennai it cannot be felt. Give reasons.

Atmospheric pressure influences movement of wind. Give reasons.