1) When is Earth Day Celebrated? a) 22 January b) 23 December c) 22 April d) 1 August 2) What is the green pigment called which is found in leaves that helps the plant to make food? a) Photosynthesis b) Chlorophyll c) Water d) Food 3) How much of the Earth's water can humans use? a) 10% b) 1% c) 99% d) 50% 4) What uses the most energy at home? a) Air Conditioner and Heating Appliances. b) Washer and Dryer c) Refrigerator or Microwaves d) Computers. 5) Which part of the plant makes food? a) Stem b) Leaves c) Fruit d) Leaves 6) How do trees improve the environment for humans and animals? a) Providing habitat b) Creating Shade. c) Clearing the shade. d) All of the above. 7) The air surrounding the Earth is called a) Ozone b) Atmosphere c) Troposphere d) Oxygen 8) What do you see in this picture? a) Ball b) Light c) Globe d) Map 9) Which of the following activity are harmful for the environment? a) b) c) d) 10) How can we save water? a) By showering instead of bathing. b) By checking leaks regularly. c) By keeping the water taps on.

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