📘 Class 5 EVS – Lesson 2: Climate Change (Workbook Answers)
🟦 Worksheet – 1 (Pages 95–98) 5th EVS Climate Change Workbook Answers a
Concept: Definition of climate change & causes of climate change
Page 95
II. Fill in the blanks:
Climate change means long term changes in weather, such as changes in temperature and rainfall on the Earth. It happens mainly because human activities like burning fuels and cutting trees, add harmful gases to the air, making the Earth warmer.
Page 96
III. Read the paragraph and answer:
1. Why is cutting trees not good for the climate?
Trees absorb carbon dioxide from the air. When trees are cut, this harmful gas stays in the atmosphere and increases the Earth's temperature, causing climate change.
2. How does smoke from vehicles and factories affect the air?
Smoke from vehicles and factories pollutes the air and increases the temperature, which adds to climate change.
3. What can you do to reduce pollution in your surroundings?
I can walk or use a bicycle for short distances, avoid burning waste, plant trees, and use eco-friendly products instead of plastic.
4. How can planting trees help reduce climate change?
Trees absorb carbon dioxide and release oxygen, cool the surroundings, bring rainfall, and reduce pollution — all of which help reduce climate change.
IV. Multiple Choice Questions:
1. Identify the wrong pair – ( C ) Global warming – drop in Temperature
Page 97
2. Rains occurring during harvest time. What will be the result? – ( B ) Rain during harvest destroys the crops
3. In spite of cool weather, we feel hot in December. Why? – ( B ) The weather pattern has changed over the years
V. Answer in two or three sentences:
1. Suggest a few proposals to reduce vehicle pollution in your area.
We should use public transport, cycle or walk for short distances, share vehicles (carpooling), and get vehicles serviced regularly to reduce smoke.
2. What will happen if we do not get timely rains?
Crops will fail due to lack of water, leading to drought and water scarcity, which affects food supply and drinking water.
Page 98 APTEACHERS.IN
3. How are human activities responsible for climate change?
Human activities such as burning fossil fuels, cutting down trees, and polluting air and water release harmful gases into the atmosphere, which increases the Earth's temperature and causes climate change.
VI. Answer in four or five sentences:
1. What is climate? Write any two causes of climate change.
Climate is the weather conditions such as temperature and rainfall that prevail in an area over a long period of time. Two causes of climate change are: burning of fossil fuels (like coal and petrol) and cutting down of trees (deforestation).
2. Climate change is causing stronger cyclones, global warming, and increased air pollution. Explain how these changes affect people's daily life and the environment.
Stronger cyclones destroy houses, crops and trees, especially in coastal areas, and put people's lives in danger. Global warming melts glaciers and ice, raises sea levels, and causes heat waves and droughts. Increased air pollution causes breathing problems and diseases in humans, and also harms plants and animals. Together, these changes disturb farming, drinking water supply, and daily life for everyone.
🟩 Worksheet – 2 (Pages 99–102) 5th EVS Climate Change Workbook Answers a
Concept: Effects of climate change
Page 99
II. True (T) or False (F):
1. Rising temperatures can cause more heat waves and droughts. — ( T )
2. A green world helps reduce global warming. — ( T )
3. Global warming leads to melting of ice and rising sea levels. — ( T )
4. Climate change has no effect on plants, animals, and humans. — ( F )
Page 100
1. Name some eco-friendly alternatives to plastic carry bags.
Jute bags, cloth bags, and paper bags.
2. How to protect the earth from plastic waste?
By reducing the use of plastic, reusing items, choosing eco-friendly alternatives like jute bags and steel bottles, and disposing of plastic waste properly for recycling.
3. What activity helps increase the number of trees?
Plantation (planting saplings/afforestation).
4. What happens to the environment when trees are cut down continuously?
It increases pollution, disturbs the balance of nature, causes soil erosion, and reduces rainfall and oxygen.
IV. Multiple Choice Questions:
1. "The Earth is choking." What do you understand by this? – ( B ) Plastic covers the soil and prevents air and water from entering the ground.
2. How can we stop floods? – ( C ) By planting more trees.
Page 101
3. Pick the correct match – ( B ) Less rainfall – Drought
V. Answer in two or three sentences:
1. How does deforestation affect climate?
Deforestation reduces rainfall, increases the temperature of the area, causes soil erosion, and disturbs the natural balance, leading to climate change.
2. Plastic does not decompose in the soil. Suggest two alternatives:
1. Instead of a plastic water bottle, we use a stainless steel bottle / glass bottle.
2. Instead of a polythene cover, we use a cloth bag / jute bag.
3. Prepare two slogans on the importance of saving the environment.
• "Save Trees, Save Lives!"
• "Go Green – Keep the Earth Clean!"
Page 102
VI. Answer in five or six sentences:
1. Why should we protect forests and trees?
Forests provide oxygen, food, shelter, and fuel for living beings. They help bring rainfall and prevent soil erosion. Trees absorb harmful gases like carbon dioxide and keep the air clean. Forests maintain the ecological balance and give shelter to many birds and animals. If we do not protect them, climate change, floods and droughts will increase.
2. Plastic does not decompose easily. Why is this property of plastic considered dangerous?
Since plastic does not decompose easily, it stays in the soil and water for hundreds of years. It blocks rainwater from seeping into the ground and pollutes canals, tanks and rivers. Animals get sick when they eat food mixed with plastic waste. Burning plastic releases harmful chemicals into the air. This makes plastic a long-term threat to the environment and to human and animal health.
🟧 Worksheet – 3 (Pages 103–106)
Concept: Global Warming, Green World
Page 103
II. Tick the eco-friendly action:
1. Throwing waste in ponds. — Not eco-friendly (✗)
2. Idols made of POP are immersed in water. — Not eco-friendly (✗)
3. Dump the wet and dry waste in the same place. — Not eco-friendly (✗)
4. Switching off lights in day time. — Eco-friendly (✓)
5. Refrigerators and air conditioners give out harmful chemicals. — Not eco-friendly (✗)
6. Burning fuels is not a major reason for global warming. — Incorrect statement (✗)
Page 104 APTEACHERS.IN
III. Choose the right dust bin:
Wet waste: Banana peel, Leftover food
Dry waste: Old news paper, Broken glass
3. Why should all types of waste not be kept in the same bin?
Because wet waste and dry waste need to be treated differently — wet waste can be composted into manure, while dry waste can be recycled. Mixing them makes disposal, composting and recycling difficult and can cause pollution.
IV. Multiple Choice Questions:
1. A green club plans to plant saplings. How will this help a village in the long run? – ( B ) It balances nature and brings rain.
2. Which explains how cutting down trees leads to an increase in temperature? – ( C ) Trees absorb harmful gases and keep the air cool; cutting them stops this natural cooling process.
Page 105
V. Answer in two or three sentences:
1. What is global warming?
Global warming is the gradual increase in the Earth's temperature over time. It happens mainly due to human activities like burning fossil fuels, cutting trees, and pollution, which release harmful gases into the atmosphere.
2. Suggest two simple changes you can make in your daily routine to reduce pollution.
Walking or cycling for short distances instead of using vehicles, and switching off lights and fans when not needed.
VI. Answer in four or five sentences:
1. Write the process of disposing of the garbage at your home.
At home, we first separate the garbage into wet waste (like vegetable peels and food waste) and dry waste (like paper, plastic and glass). The wet waste is collected separately and can be used to make organic manure. The dry waste is kept aside for recycling. We avoid burning waste and keep the bins covered to prevent pollution.
Page 106
2. Climate change is a universal problem. Explain.
Climate change is called a universal problem because it affects the whole world and not just one place. Rising temperatures, melting glaciers, floods and droughts affect people, plants and animals everywhere. Pollution created in one country can affect the air and climate of other countries too. So, everyone across the world needs to work together to solve this problem.
3. You went to a shop to buy grocery items. The shopkeeper gave you the goods in a plastic carry bag. What would you say to him?
I would politely tell him that plastic bags harm the environment because they do not decompose easily and pollute the soil and water. I would request him to use a cloth or paper bag instead, and tell him I will bring my own cloth bag next time.
🟪 Worksheet – 4 (Pages 107–110)
Concept: Pollution-free energy sources, Chipko Movement and Eco-friendly living
Page 107
II. Fill in the blanks:
1. Energy sources that do not cause pollution are pollution-free energy sources.
2. The Chipko Movement was started to protect trees by hugging them.
3. Using cloth bags instead of plastic bags is an example of eco-friendly living.
4. The Chipko Movement helped in spreading awareness about forest conservation.
Page 108
Now answer the following questions:
1. Name one pollution-free energy source.
Solar energy (wind energy or water/hydro power are also correct).
2. What was the main aim of the Chipko Movement?
To protect trees and forests from being cut down.
3. How did people protest in the Chipko Movement?
People hugged the trees to stop contractors and workers from cutting them down.
4. What does eco-friendly living mean?
Eco-friendly living means caring for nature in our daily life, such as saving electricity, using less plastic, reusing things, and planting more trees.
IV. Multiple Choice Questions:
1. Riya is going to the vegetable market with her father. To be eco-friendly, what should she insist on taking? – ( B ) A bag made of jute or cloth.
2. Sameer wants to grow vegetables in his kitchen garden. Instead of chemical fertilizers, what should he apply? – ( C ) Kitchen waste as manure.
Page 109
3. Why are solar power and wind power considered better alternatives to fuels like petrol or coal? – ( B ) Because they do not cause pollution.
4. Which of the following is not correct about the Chipko Movement? – ( B ) Chipko means to cut down trees.
V. Answer in two or three sentences:
1. Write two eco-friendly practices you follow at home.
Switching off lights and fans when not in use, and using cloth bags instead of plastic bags while shopping.
2. Why should we appreciate the movements that protect the environment?
Such movements spread awareness about protecting nature and inspire people to take action to save forests, trees, and natural resources for future generations.
Page 110
3. Why should we not use plastic plates?
Plastic plates do not decompose easily, pollute the soil and water, and can release harmful chemicals when used with hot food, which is dangerous to our health.
VI. Answer in five or six sentences:
1. Villagers cut many trees to build houses. What change may happen to the climate of that area?
Cutting many trees can make the area drier and hotter because there are fewer trees to provide shade and bring rainfall. The soil may become loose and get eroded easily without tree roots to hold it together. Floods may increase since there are no trees to absorb rainwater. Birds and animals may lose their homes and move away. Over time, the fertile land may turn into a dry, barren area, disturbing the local climate.
2. Write about eco-friendly energy sources.
Eco-friendly energy sources are those that do not pollute the environment while producing energy. Solar energy uses sunlight to generate electricity, wind energy uses windmills to generate power from moving air, and water (hydro) power uses flowing water to generate electricity. These sources are clean, renewable, and safe, unlike fuels such as coal and petrol which release harmful gases and pollute the air.
🟥 Assessment (Pages 111–112)
Page 111
I. Multiple Choice Questions:
1. What do we call the long-term changes of weather in a place? – ( D ) Climate change
2. Which human activity is a major cause of climate change? – ( B ) Vehicle smoke
3. When trees are cut down, the land becomes dry and the atmosphere becomes hot. What effect of deforestation is shown here? – ( C ) Rise in temperature
4. A highway is planned through a forest near a village. To stop the trees from being cut, villagers hug the trees and protest. Which movement and value does this show? – ( C ) Chipko Movement and environment protection
II. Answer in four or five sentences:
1. Write the effects of climate change on all living things.
Climate change causes floods and droughts, which affect crops and food production for humans. Melting ice destroys the habitats of animals like polar bears in cold regions. The warming of sea water harms aquatic plants and animals. Extreme heat causes forest fires that destroy plant and animal habitats. Overall, climate change makes it harder for animals, plants and people to survive as environmental conditions keep changing unpredictably.
Page 112
III. Answer in five or six sentences:
1. Prepare a list of four features of an eco-friendly home.
1. Using stainless steel tumblers or bottles instead of plastic bottles.
2. Carrying cloth, jute or paper bags instead of plastic bags while going to the market.
3. Switching off lights and fans when leaving the room to save electricity.
4. Growing a kitchen garden, using kitchen waste as organic manure, and segregating garbage into dry and wet waste.
