Air, Water & Weather Worksheet-9

Air, Water & Weather Worksheet-9

Fill in the blank

1. The blanket of air surrounding the Earth's surface is known as ______.

2. The process in which water is cleaned by passing it through filter paper is called _____.

3. The process in which the insoluble impurities settle down is called   _______.

4. The amount of water vapour present in the air is called _______.

5. The process in which water is gently poured out after sedimentation is called _______.

6. The process in which chlorine is added to kill germs is called _______.

7. The movement of the Earth around the sun is called______.

8. The heat of the sun changes water into water vapour by a process called _______.

Answer

1. atmosphere

2. filtration

3. sedimentation

4. humidity

5. decantation

6. chlorination

7. revolution

8. evaporation