Class 3 Exam > Class 3 Notes > Worksheets with solutions for Class 3 > Worksheet: Our Environment - 2
Our Environment - 2 Class 3 Worksheet Science
Q1: Multiple-Choice Questions (MCQs)
(i) What is the term for everything that surrounds us, including living and non-living things?
(a) Ecosystem
(b) Planet
(c) Space
(d) Environment
(ii) What is the process of plants making food using sunlight called?
(a) Photosynthesis
(b) Respiration
(c) Decomposition
(d) Digestion
(iii) What do we call the different living things and their surroundings that interact with each other?
(a) Environment
(b) Ecosystem
(c) Universe
(d) Atmosphere
(iv) Which of the following is a natural resource that comes from trees and is used to make paper?
(a) Plastic
(b) Metal
(c) Paper
(d) Glass
(v) Which of the following is an example of a non-renewable resource?
(a) Wind energy
(b) Solar energy
(c) Coal
(d) Rainwater
Q2: Fill in the Blanks
(i) Water, air, soil, plants, and animals together make up our __________.
(ii) Recycling helps us use resources __________ and helps keep the environment clean.
(iii) The place where an animal or plant lives and gets everything it needs is called its __________.
(iv) Pollution is harmful to our environment and can make air, water, and soil __________.
(v) The energy that comes from the sun is called __________ energy.
Q3: True/False Questions
(i) Trees and plants are not important for our environment.
(ii) Renewable resources can be used up and run out.
(iii) Ecosystems only include living things and not the physical surroundings.
(iv) Pollution can have negative effects on human health.
(v) Plastic is a biodegradable material.
Q4: Answer the following Questions
(i) Define the term "environment" and explain why it is considered all-inclusive.
(ii) Describe an activity that improves the environment and another activity that disturbs it, providing examples for each.
(iii) Explain the concept of the environment having a tolerance level. Provide an example of an environmental factor with a tolerance level.
(iv) Why is it important for humans to be mindful of their actions in the environment?
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FAQs on Our Environment - 2 Class 3 Worksheet Science
| 1. What are some major environmental issues affecting our planet? |  |
Ans. Some major environmental issues affecting our planet include climate change, deforestation, air pollution, water scarcity, and plastic pollution. These issues can have detrimental effects on ecosystems, human health, and the overall well-being of the planet.
| 2. How does climate change impact the environment? | |
Ans. Climate change impacts the environment in several ways. It leads to rising global temperatures, which can cause melting ice caps, sea-level rise, and more frequent and intense extreme weather events. It also disrupts ecosystems, leading to changes in habitats and the loss of biodiversity. Additionally, climate change can affect agriculture, water resources, and human health.
| 3. What are the causes of deforestation? | |
Ans. Deforestation is primarily caused by human activities such as logging, agriculture expansion, and urbanization. Some other factors contributing to deforestation include the demand for timber, clearing land for livestock grazing, and the production of commodities like palm oil and soybeans. These activities result in the permanent removal of forest cover, leading to the loss of biodiversity and increased greenhouse gas emissions.
| 4. How does plastic pollution affect marine life? | |
Ans. Plastic pollution has a severe impact on marine life. When plastic waste enters the oceans, it can be mistaken for food by marine animals, leading to ingestion and entanglement. This can cause suffocation, internal injuries, and even death. Additionally, plastic debris can release toxic chemicals into the water, further harming marine organisms and disrupting marine ecosystems.
| 5. What are some ways individuals can help protect the environment? | |
Ans. Individuals can contribute to protecting the environment in various ways. Some actions include reducing energy consumption by using energy-efficient appliances, conserving water, recycling and properly disposing of waste, using public transportation or carpooling, planting trees, and supporting sustainable and eco-friendly practices. Additionally, raising awareness about environmental issues and advocating for policy changes can also make a significant impact.
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Nov 23, 2024 Last updated |
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