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Air and Water - 2 Class 1 Worksheet EVS

Q1: Fill in the Blanks.


(i) Air is a mixture of _______ gases.
Air and Water - 2 Class 1 Worksheet EVS

(ii) The most abundant gas in the air is _______.

(iii) The process of taking in air containing oxygen into the body and giving out carbon dioxide is called _______.

(iv) The layer of gases surrounding the Earth is known as the ________.
Air and Water - 2 Class 1 Worksheet EVS

(v) _______ is the process by which water changes into water vapor.

Q2: Match the Column.

Match the items in Column A with their respective descriptions in Column B.
Air and Water - 2 Class 1 Worksheet EVS

Q3: True or False.

(i) Air is composed of only one gas.

(ii) All living organisms need air to survive.

(iii) The ozone layer protects us from harmful ultraviolet rays of the sun.

(iv) Ice is an example of water in the liquid state.
Air and Water - 2 Class 1 Worksheet EVS

(v) Plants release oxygen during photosynthesis.

Q4: Arrange in Correct Order.

Arrange the following steps in the correct order to explain the water cycle.
(a) Precipitation
(b) Evaporation
(c) Condensation
(d) Collection
(e) Runoff

Q5: Choose the Odd One Out.

(i) Nitrogen, Oxygen, Water Vapor, Carbon Dioxide
Air and Water - 2 Class 1 Worksheet EVS

(ii) Lake, River, Pond, Glacier

(iii) Respiratory System, Circulatory System, Digestive System, Solar System

(iv) Boiling, Freezing, Melting, Condensation
Air and Water - 2 Class 1 Worksheet EVS

(v) Atlantic, Pacific, Indian, Earth

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FAQs on Air and Water - 2 Class 1 Worksheet EVS

1. What are the main sources of air pollution?
Ans. The main sources of air pollution include industrial activities, vehicle emissions, burning of fossil fuels, agricultural activities, and waste management.
2. How does air pollution affect human health?
Ans. Air pollution can have detrimental effects on human health. Inhalation of polluted air can lead to respiratory problems, such as asthma, bronchitis, and lung cancer. It can also aggravate existing heart and lung conditions, increase the risk of infections, and cause allergies.
3. What are the consequences of water pollution?
Ans. Water pollution can have severe consequences for both human beings and the environment. Contaminated water can lead to waterborne diseases, such as cholera and typhoid. It can also harm aquatic life, disrupt ecosystems, and contaminate drinking water sources.
4. How can we reduce air pollution?
Ans. There are several ways to reduce air pollution. Some effective measures include using cleaner fuels and technologies, promoting renewable energy sources, implementing stricter emission standards for vehicles and industries, planting more trees to absorb pollutants, and raising awareness about the importance of air quality.
5. What are the sources of water pollution?
Ans. Water pollution can be caused by various sources, including industrial discharges, sewage and wastewater, agricultural runoff, oil spills, and improper waste disposal. These sources introduce pollutants such as chemicals, toxins, and microorganisms into water bodies, leading to contamination.
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