Air, Water, and Weather

Air, Water & Weather Worksheet-7

Multiple Choice Questions:

1. What is the process of adding chlorine tablets to water and making the water pure called?

(a) Chlorination         (b) Condensation      (c) Filtration

2. This is one of the method of purifying water in which all the insoluble impurities settle down. Identify the method.

 (a) Decantation        (b) Sedimentation     (c) Chlorination

Air, Water & Weather Worksheet-8

Multiple Choice Question (More than One Option Correct)

1. Air contains:

(a) Water vapour      (b) Dust                       (c) Gas

(d) House                   (e) Tent                       (f) Road

2. Water exists in these forms.

(a) Snow                      (b) Liquid water        (c) Water vapour

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______.