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Class 4 Science - Our Environment - CBSE Worksheets - 1

Q1: Cross Puzzle.

Use the clues to solve the crossword puzzle.
ACROSS

1. Fruit peels are  ______ waste.
2. Solid waste is called  ______.
3.  ______ is a manure made from biodegradable waste.
DOWN
4. Biodegradable substances  ______ and mix with the soil.
5. To  ______ means to make something useful from waste.
Class 4 Science - Our Environment - CBSE Worksheets - 1

Q2: Name the following.

(i) A gas that absorbs harmful rays from the sun.

(ii) Things that rot and mix with the soil.

(iii) Warming up of the atmosphere because of increasing carbon dioxide. Class 4 Science - Our Environment - CBSE Worksheets - 1 

Q3: True or False.

(i) If you use a plastic bag again and again you help reduce garbage.

(ii) A safe way to dispose of garbage is to burn it.

(iii) Non-biodegradable waste does not rot.

(iv) Water pollution leads to melting of ice at the poles and flooding of coastal areas.

Q4: Fill in the blanks.

(i) Drinking polluted water can cause diseases such as ______ and _______.

(ii) Harmful substances in the air, water and soil are called  ______.

(iv) Getting regular vehicle pollution reduces  ______ pollution.

(iv) Trees and plants help to clean the _____ by producing oxygen.

(v) Recycling materials like paper, plastic, and glass helps to reduce _____ waste.

Class 4 Science - Our Environment - CBSE Worksheets - 1

Q5: Answer the following questions in brief.

(i) What is recycling? Name three materials that can be recycled.

(ii) What harm do plastic bags cause if thrown in a drain?

(iii) List the causes of land pollution.

(iv) Explain how global warming occurs.

Q6: Multiple Choice Questions (MCQs)

(i) Acid rain is caused by
(a)
air pollution
(b) 
water pollution
(c) 
soil pollution
(d) 
neither of these

(ii) Our environment consists of
(a) 
living things only
(b) 
non-living things only
(c) 
both living and non-living things
(d) 
neither living nor non-living things

(iii) Which of these causes soil pollution?
(a) 
Garbage
(b) 
Smoke
(c) 
Cutting trees
(d) 
All of these

(iv) This is a gas which protects us from the ultra violet rays of the sun.
(a) 
Oxygen
(b)
Ozone
(c) 
Methane
(d) 
Carbon dioxide


You can find Worksheets Solutions here: Worksheet Solutions: Our Environment - 1 

The document Class 4 Science - Our Environment - CBSE Worksheets - 1 is a part of the Class 4 Course Science for Class 4.
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FAQs on Class 4 Science - Our Environment - CBSE Worksheets - 1

1. What are some examples of environmental issues that affect our planet?
Ans. Some examples of environmental issues that affect our planet include climate change, deforestation, pollution, and loss of biodiversity.
2. How can individuals help protect the environment in their daily lives?
Ans. Individuals can help protect the environment by reducing waste, conserving water and energy, recycling, using public transportation, and supporting sustainable practices.
3. What are some ways in which human activities impact the environment?
Ans. Human activities impact the environment through pollution, deforestation, overpopulation, and overconsumption of natural resources.
4. How does climate change affect our environment and ecosystems?
Ans. Climate change affects our environment and ecosystems by causing rising temperatures, sea level rise, extreme weather events, and disruption of habitats for plants and animals.
5. What are some solutions to combat environmental issues and promote sustainability?
Ans. Some solutions to combat environmental issues and promote sustainability include renewable energy sources, reforestation, wildlife conservation, and sustainable agriculture practices.
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