Let's solve the worksheet step by step and explain each answer.
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1. Fill in the blanks
a. ______ can be of three types – air, land and water.
✔ Answer: *Pollution*
Explanation: Pollution is categorized into three main types: air pollution, land (soil) pollution, and water pollution.
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b. The cutting down of trees on a large scale is called ______.
✔ Answer: *Deforestation*
Explanation: Deforestation refers to the large-scale removal or clearing of forests, often for agriculture, urban development, or logging.
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c. Forests can also cause _____ pollution.
✔ Answer: *Noise* (or possibly *air*, depending on context — but likely
noise)
Wait — let’s think carefully.
Actually, this one is tricky. Forests
do not typically cause pollution. But if we interpret it as "activities related to forests" (like deforestation), then:
But the sentence says
"Forests can also cause _____ pollution." — which implies forests themselves are causing pollution.
This seems incorrect. However, in some contexts,
forest fires (natural or human-caused) can lead to
air pollution, so perhaps:
✔ Answer: *Air*
Explanation: Forests, especially when they burn (e.g., wildfires), release smoke and harmful gases into the atmosphere, contributing to
air pollution.
So,
"air" is the most logical answer here.
> ⚠️ Note: This might be a poorly worded question. Forests themselves don’t cause pollution — but forest fires do. So assuming the intended meaning is related to forest-related events,
air pollution is the best fit.
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2. Choose the correct answer
A. Which of the following day is celebrated as World Environmental Day?
a. 5th March
b. 5th April
c. 5th May
d. 5th June
✔ Answer: d. 5th June
Explanation: World Environment Day is celebrated every year on
June 5th to raise awareness about environmental protection.
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B. The following ways can cause water pollution:
a. Bathing in river
b. Washing clothes in river
c. Throwing waste in rivers
d. All of these
✔ Answer: d. All of these
Explanation: All three activities introduce pollutants (soap, detergents, waste, germs) into rivers, which degrade water quality and harm aquatic life.
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C. Which of the following statement is true?
a. Polluted water is harmful for both plants and animals.
b. Environment is comprised of non-living things.
c. Deforestation decreases carbon dioxide in the air
d. Both (a) and (c)
Let’s evaluate each:
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a. ✔ True — Polluted water harms aquatic plants and animals.
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b. ✘ False — Environment includes both living (plants, animals) and non-living (soil, water, air) things.
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c. ✘ False — Deforestation
increases CO₂ in the air because trees absorb CO₂; removing them reduces absorption.
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d. ✘ False — Since (c) is false, (d) cannot be correct.
✔ Correct Answer: a. Polluted water is harmful for both plants and animals.
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✔ Final Answers:
####
1. Fill in the blanks
a.
Pollution
b.
Deforestation
c.
Air *(or possibly "noise", but "air" is more plausible)*
####
2. Choose the correct answer
A.
d. 5th June
B.
d. All of these
C.
a. Polluted water is harmful for both plants and animals.
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📝 Summary:
- Pollution has three types: air, land, water.
- Cutting down trees = deforestation.
- Forest fires contribute to air pollution.
- World Environment Day = June 5.
- Activities like bathing, washing clothes, throwing waste in rivers pollute water.
- Polluted water harms plants and animals.
Let me know if you'd like a printable version or explanations in simpler language!
Parent Tip: Review the logic above to help your child master the concept of environmental worksheet.
