(i) Which of the following is a natural greenhouse gas?
(a) Oxygen
(b) Carbon dioxide
(c) Nitrogen
(d) Hydrogen
(ii) What is the primary source of energy for the water cycle?
(a) Wind
(b) Sun
(c) Earth's core
(d) Moon
(iii) Which activity contributes to air pollution?
(a) Planting trees
(b) Using public transportation
(c) Burning fossil fuels
(d) Recycling paper
(iv) What is the main purpose of the ozone layer in the atmosphere?
(a) To produce oxygen for breathing
(b) To prevent the greenhouse effect
(c) To absorb harmful UV rays
(d) To regulate the Earth's rotation
(v) Which environmental problem is caused by the excessive use of synthetic fertilizers and pesticides?
(a) Global warming
(b) Soil erosion
(c) Acid rain
(d) Deforestation
(i) The process by which green plants make their food is called __________.
(ii) __________ is the thin layer of gases that surround the Earth.
(iii) The process of water turning into vapor is called __________.
(iv) The three main types of pollution are air pollution, water pollution, and __________.
(v) __________ is the excessive cutting down of trees.
Match the items in Column A with their corresponding descriptions in Column B.
(i) The ozone layer helps in protecting the Earth from harmful ultraviolet (UV) rays of the sun.
(ii) Overpopulation has no impact on the environment.
(iii) All types of plastic are biodegradable.
(iv) Recycling helps reduce the amount of waste in landfills.
(v) Cutting down trees has no effect on the water cycle.
(i) What is biodiversity, and why is it important for the environment?
(ii) Describe the greenhouse effect and its impact on global temperatures.
(iii) What are the three Rs in waste management, and how do they help reduce environmental impact?
(iv) Explain the concept of the food chain with an example.
(v) How can individuals contribute to conserving the environment in their daily lives?
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1. What are some ways to reduce air pollution? |
2. How does deforestation impact our environment? |
3. What are the effects of water pollution on marine life? |
4. How can individuals help conserve water? |
5. What are the consequences of plastic pollution? |
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