Environment Quiz - CBSE Class 7 Social Science

Free practice quiz: Environment (CBSE Class 7 Social Science). 20 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This CBSE Class 7 Social Science practice quiz has 20 multiple-choice questions on Environment, and 20 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. What does the term 'environment' refer to?

   1. Only the natural surroundings
   2. Only human-made surroundings
   3. The surroundings that affect living organisms
   4. None of the above
   Show answer

   Answer: C. The surroundings that affect living organisms

   The environment encompasses all living and non-living things that interact and affect organisms, which includes both natural and human-made surroundings.

2. What is a consequence of deforestation?

   1. Increased rainfall
   2. Loss of biodiversity
   3. More oxygen production
   4. Improved soil fertility
   Show answer

   Answer: B. Loss of biodiversity

   Deforestation leads to the destruction of habitats, which results in loss of species and reduction in biodiversity.

3. Why is biodiversity important for the environment?

   1. It reduces the need for water
   2. It increases food production
   3. It enhances ecosystem stability
   4. It makes ecosystems more complex
   Show answer

   Answer: C. It enhances ecosystem stability

   Biodiversity contributes to the resilience and stability of ecosystems, allowing them to withstand environmental changes.

4. What is the impact of overfishing on marine ecosystems?

   1. Increases fish populations
   2. Decreases biodiversity
   3. Enhances food security
   4. Improves ocean health
   Show answer

   Answer: B. Decreases biodiversity

   Overfishing can lead to the decline of fish populations and disrupt the balance of marine ecosystems by reducing biodiversity.

5. What is the significance of the ozone layer?

   1. It provides oxygen
   2. It protects living organisms from harmful UV radiation
   3. It contributes to climate change
   4. It has no significance
   Show answer

   Answer: B. It protects living organisms from harmful UV radiation

   The ozone layer absorbs the majority of the sun's harmful UV radiation, protecting living organisms on Earth.

More questions in this quiz

Answers and explanations are in the full quiz.

1. Which of the following is a component of the environment?
2. What is one major effect of pollution on the environment?
3. Which of the following is a renewable resource?
4. How does plastic pollution affect marine life?
5. Which of the following is a greenhouse gas?
6. What is the main cause of climate change?
7. What initiative aims to reduce carbon footprint through renewable energy use?
8. What is sustainable development?
9. Which of the following practices can help conserve water?
10. How does urbanization impact biodiversity?
11. Which of the following is a consequence of global warming?
12. Why are ecosystems considered fragile?
13. How is climate change linked to fossil fuels?
14. What defines an ecosystem?
15. Which of the following actions is most effective in combating climate change?

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