Class 3 Exam > Class 3 Notes > Social Science for Class 3 > Worksheet: Our Environment - 1
Our Environment - 1 Class 3 Worksheet Science
Q1: Multiple Choice Questions (MCQs)
Q1: Multiple Choice Questions (MCQs)(i) Which of these is not a part of the environment of a fish?
(a) Trees
(b) Water
(c) Underwater plants
(d) Water insects
(ii) Which of the following is a non-living part of the environment?
(a) Animals
(b) Birds
(c) Soil
(d) Plants
(iii) Plants depend on animals for
(a) food
(b) carbon dioxide
(c) oxygen
(d) shelter
(iv) Animals depend on plants for
(a) food
(b) oxygen
(c) shelter
(d) all of these
Q2: True & False
(i) Our body is made up of 70% of water.
(ii) Fertile soil supports rich variety of plants.
(iii) Birds and animals help plants to reproduce.
(iv) Sunlight gives warmth to plants only.
(v) Our environment includes only living organisms and not non-living elements.
Q3: Fill in the Blanks
(i) Our environment includes __________ living and non-living elements.
(ii) __________ from factories and motor cars can disturb the environment.
(iii) Excessive noise can harm the __________ of living beings.
(iv) Environment has a __________ level in every area.
(v) Tree plantation improves the environment by increasing __________ cover.
Q4: Answer the following questions in brief.
(i) Explain why excessive noise pollution is harmful to both humans and animals.
(ii) Describe one activity that can improve the environment and its impact on the surroundings.
(iii) What is the significance of recognizing the tolerance level of the environment?
(iv) Explain why controlling the use of insecticides and pesticides is essential for maintaining a healthy environment.
The document Our Environment - 1 Class 3 Worksheet Science is a part of the Class 3 Course Social Science for Class 3.
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FAQs on Our Environment - 1 Class 3 Worksheet Science
| 1. What are the main causes of environmental pollution? |  |
Ans. The main causes of environmental pollution include industrial activities, vehicular emissions, improper waste disposal, deforestation, and the use of harmful chemicals.
| 2. How does environmental pollution affect human health? | |
Ans. Environmental pollution can have severe effects on human health. It can lead to respiratory problems, allergies, cardiovascular diseases, and even cancer. Additionally, polluted water and food can cause gastrointestinal issues and other related illnesses.
| 3. What are the consequences of deforestation on the environment? | |
Ans. Deforestation has several negative consequences on the environment. It leads to loss of biodiversity, soil erosion, disruption of water cycles, and contributes to climate change. It also reduces the availability of oxygen and increases carbon dioxide levels in the atmosphere.
| 4. How can we reduce our carbon footprint? | |
Ans. There are several ways to reduce our carbon footprint. We can reduce energy consumption by using energy-efficient appliances and practices, opting for renewable energy sources, using public transportation or carpooling, practicing responsible waste management, and planting trees to offset carbon emissions.
| 5. What are the benefits of recycling? | |
Ans. Recycling has numerous benefits for the environment. It conserves natural resources, reduces the need for landfill space, saves energy, lowers greenhouse gas emissions, and helps in the production of new products. Additionally, recycling creates job opportunities in the recycling industry.
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Dec 22, 2024 Last updated |
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