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Class 3 Science - Our Environment - CBSE Worksheets

MCQs

Question 1: Which of these is not a part of the environment of a fish?
(a) Trees
(b) Water
(c) Underwater plants
(d) Water insects


Question 2: Plants depend on animals for

(a) food
(b) carbon dioxide
(c) oxygen
(d) shelter


Question 3: Which of the following is a non-living part of the environment?

(a) Animals
(b) Birds
(c) Soil
(d) Plants

Question 4: Animals depend on plants for
(a) food
(b) oxygen
(c) shelter
(d) all of these

True & False

Question 5: 

  • Our body is made up of 70% of water.
  • Fertile soil supports rich variety of plants.
  • Birds and animals help plants to reproduce.
  • Sunlight gives warmth to plants only.

Answer the following questions in brief.

Question 6: List two ways in which:
(a) Plants depend on animals
(b) Animals depend on plants

Question 7: What is environment?

Question 8: Name four abiotic components of the environment that all living things need.

You can access the solutions to this worksheet here.

The document Class 3 Science - Our Environment - CBSE Worksheets is a part of the Class 3 Course Science for Class 3.
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FAQs on Class 3 Science - Our Environment - CBSE Worksheets

1. What are the major environmental issues?
Ans. Major environmental issues include pollution, deforestation, climate change, loss of biodiversity, and depletion of natural resources.
2. How does pollution affect the environment?
Ans. Pollution can have various harmful effects on the environment. It can contaminate air, water, and soil, leading to health problems for humans and wildlife. Air pollution can contribute to respiratory diseases, while water pollution can harm aquatic life and make water unfit for consumption. Soil pollution can reduce soil fertility and affect plant growth.
3. What is deforestation and why is it a concern?
Ans. Deforestation refers to the clearing of forests for various purposes like agriculture, urbanization, and logging. It is a concern because forests play a crucial role in maintaining the balance of ecosystems. Deforestation can lead to loss of habitat for many species, contribute to climate change by reducing carbon dioxide absorption, and disrupt water cycles.
4. How does climate change impact the environment?
Ans. Climate change has wide-ranging impacts on the environment. It can cause rising temperatures, melting of glaciers and polar ice caps, sea-level rise, extreme weather events, and shifts in ecosystems. These changes can result in habitat loss, endanger species, and affect agriculture, water availability, and human livelihoods.
5. What can individuals do to protect the environment?
Ans. Individuals can contribute to protecting the environment through various actions. Some examples include reducing energy consumption, recycling and reusing materials, conserving water, using eco-friendly transportation options, planting trees, and supporting sustainable practices. Small changes in daily habits can collectively make a significant difference in preserving the environment.
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