Available Answers

1. 1.

   Multiple choice questions:

   1. This causes changes in weather.
      1. Sun
      2. Moon
      3. Soil
   2. The amount of water vapour in the air is called _______________.
      1. humidity
      2. frost
      3. dew
   3. The breeze that blows from the sea towards the land is _______________.
      1. land breeze
      2. storm
      3. sea breeze
   4. This is not a solid form of water.
      1. Snow
      2. Hail
      3. Dew
   5. This is a method of water purification.
      1. Chlorination
      2. Condensation
      3. Decantation
2. 2.

   True-False:

   1. Changes of water to water vapour is called evaporation.
   2. The thick covering of air around the Earth is atmosphere.
   3. Hot air is heavier than cold air.
   4. The simplest way to purify water is by boiling it.
   5. We should keep water near drains.
3. 3.

   Fill in the blanks:

   1. The average weather pattern over a long period of time is called _______________.
   2. Air is a mixture of many ______________.
   3. More than ______________ of the Earth's surface is covered with water.
   4. Adding chlorine tablets to water is called ______________.
4. 4.

   Name any two:

   1. Cases when rate of evaporation is fast.
   2. Different forms in which water condenses in nature.
   3. Methods of water purification.
5. 5.

   What do you understand by weather?
6. 6.

   Name the factors affecting the weather of a place.