(ii) What is the main source of water on Earth?
(a) Lakes
(b) Rivers
(c) Rain
(d) Groundwater
(iii) Water pollution can be caused by:
(a) Sewage
(b) Industrial waste
(c) Oil spills
(d) All of the above
(iv) Which of the following is a renewable source of energy?
(a) Coal
(b) Oil
(c) Wind
(d) Natural gas
(v) Which of the following is NOT a property of water?
(a) It is tasteless
(b) It is colorless
(c) It is odorless
(d) It is a gas
(ii) The process by which water vapor changes into water droplets is called ___________.
(iii) The process of changing a liquid into a gas is called ___________.
(iv) The process by which water is replenished in the atmosphere is called ___________.
(v) The process of turning water into a solid is called ___________.
(ii) Air pollution has no effect on human health.
(iii) The boiling point of water is 100 degrees Celsius.
(iv) Oxygen is the most abundant gas in the atmosphere.
(v) The process by which water is replenished in the atmosphere is called evaporation.
(ii) Explain the water cycle.
(iii) What is the role of air in the Earth's atmosphere?
(iv) How can we conserve water at home?
(v) What are the effects of air pollution on the environment and human health?
You can find Worksheets Solutions here: Worksheet Solutions: Air and Water - 1
43 videos|198 docs|45 tests
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1. What are the primary sources of air pollution? |
2. How does air pollution affect human health? |
3. How can we reduce air pollution? |
4. What are the main sources of water pollution? |
5. How does water pollution impact aquatic life? |
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