Practice Worksheet : Chapter 11 – Nature’s Treasures Class 6 Science
(CBSE Class 6 Science – Curiosity Book)
Class 6 Science – Chapter 11 Nature’s Treasures – Practice Worksheet
Complete Worksheet for Class 6 Science – Chapter 11: Nature’s Treasures (Curiosity Textbook).
SET – 1 (20 Marks) – Chapter 11 Nature’s Treasures – Practice Worksheet
Time: 40 minutes
Section A – Very Short Answer (1 × 4 = 4 marks)
- What is wind?
- Name any one non-renewable resource.
- What is the main source of energy on Earth?
- Define fossil fuels.
Section B – Fill in the Blanks (1 × 3 = 3 marks)
- The air that surrounds the Earth is called __________.
- Rainwater collected and stored for use is called __________ harvesting.
- Forests provide __________ and shelter to animals.
Section C – True or False (1 × 3 = 3 marks)
- Sunlight helps plants make food.
- Water from oceans is fit for drinking.
- Windmills can generate electricity.
Section D – Match the Following (1 × 3 = 3 marks)
| Column I | Column II |
|---|---|
| a) Coal | i) Renewable resource |
| b) Forest | ii) Non-renewable resource |
| c) Water | iii) Essential for life |
Section E – Short Answer (2 × 2 = 4 marks)
- Why should we save water?
- Mention two uses of solar energy.
Section F – Long Answer (3 marks)
- Explain how forests are useful to humans and animals.
ANSWERS: SET – 1
Time: 40 minutes
Section A – Very Short Answer (1 × 4 = 4 marks)
- What is wind?
Answer: Moving air is called wind. - Name any one non-renewable resource.
Answer: Coal (or petroleum / natural gas / minerals). - What is the main source of energy on Earth?
Answer: The Sun. - Define fossil fuels.
Answer: Fossil fuels are fuels formed from the remains of plants and animals buried millions of years ago (examples: coal, petroleum, natural gas).
Section B – Fill in the Blanks (1 × 3 = 3 marks)
- The air that surrounds the Earth is called __________.
Answer: atmosphere - Rainwater collected and stored for use is called __________ harvesting.
Answer: rainwater - Forests provide __________ and shelter to animals.
Answer: food
Section C – True or False (1 × 3 = 3 marks)
- Sunlight helps plants make food.
Answer: True - Water from oceans is fit for drinking.
Answer: False (It is salty.) - Windmills can generate electricity.
Answer: True
Section D – Match the Following (1 × 3 = 3 marks)
a) Coal → ii) Non-renewable resource
b) Forest → i) Renewable resource
c) Water → iii) Essential for life
Section E – Short Answer (2 × 2 = 4 marks)
- Why should we save water?
Answer: Water is limited, essential for all living beings, and needed for daily activities, so it must be conserved. - Mention two uses of solar energy.
Answer: Drying clothes, cooking in solar cookers, lighting through solar panels.
Section F – Long Answer (3 marks)
Explain how forests are useful to humans and animals.
Answer: Forests are extremely valuable because they provide essential resources like wood, fruits, medicines, gum and herbs. They offer shelter to animals, birds and insects, helping maintain biodiversity. Forests also purify the air by absorbing carbon dioxide and releasing oxygen. Their roots help bind the soil and prevent soil erosion, which protects farmland and prevents floods. They also regulate the climate by maintaining moisture and rainfall patterns. Without forests, life on Earth would be difficult because the ecological balance would be disturbed.
SET – 2 – Chapter 11 Nature’s Treasures – Practice Worksheet
Time: 40 minutes
Section A – Very Short Answer (1 × 4 = 4 marks)
- What is a renewable resource?
- Name two gases present in air.
- What is the composition of oxygen in air?
- What are minerals?
Section B – Fill in the Blanks (1 × 3 = 3 marks)
- Moving air is called __________.
- __________ is used to generate electricity in windmills.
- __________ are formed by the breaking down of rocks.
Section C – True or False (1 × 3 = 3 marks)
- Petroleum is a renewable resource.
- Forests help in preventing soil erosion.
- Air has no role in burning.
Section D – Match the Following (1 × 3 = 3 marks)
| Column I | Column II |
|---|---|
| a) Petrol | i) Renewable resource |
| b) Soil | ii) Fossil fuel |
| c) Sun | iii) Supports plant growth |
Section E – Short Answer (2 × 2 = 4 marks)
- Why is water precious?
- What are human-made resources? Give one example.
Section F – Long Answer (3 marks)
- Describe how soil is formed.
ANSWERS: SET – 2
Time: 40 minutes
Section A – Very Short Answer (1 × 4 = 4 marks)
- What is a renewable resource?
Answer: A resource that gets replenished naturally within a short period. - Name two gases present in air.
Answer: Nitrogen and oxygen. - What is the composition of oxygen in air?
Answer: 21% - What are minerals?
Answer: Minerals are naturally occurring substances found in rocks, used to make metals, tools, and machines.
Section B – Fill in the Blanks
- Moving air is called __________.
Answer: wind - __________ is used to generate electricity in windmills.
Answer: Wind - __________ are formed by the breaking down of rocks.
Answer: Soils
Section C – True or False
- Petroleum is a renewable resource.
Answer: False - Forests help in preventing soil erosion.
Answer: True - Air has no role in burning.
Answer: False (Air supports burning.)
Section D – Match the Following
a) Petrol → ii) Fossil fuel
b) Soil → iii) Supports plant growth
c) Sun → i) Renewable resource
Section E – Short Answer
- Why is water precious?
Answer: Because fresh water is limited and necessary for drinking, agriculture, and daily activities. - What are human-made resources? Give one example.
Answer: Resources created by humans using natural resources; example: furniture, buildings, machines.
Section F – Long Answer
Describe how soil is formed.
Answer: Soil is formed through a very slow process that takes thousands of years. Rocks on the Earth’s surface break down due to sunlight, wind, flowing water, and temperature changes. The roots of plants also help in breaking rocks into small particles. Over time, these tiny particles mix with dead plants, animals and microorganisms to form soil. Different areas develop different types of soil depending on the rocks and climate. This long natural process makes soil precious and essential for supporting plant life.
SET – 3 – Chapter 11 Nature’s Treasures – Practice Worksheet
Time: 40 minutes
Section A – Very Short Answer (1 × 4 = 4 marks)
- Define natural resources.
- What is rainwater harvesting?
- Why is air important for living beings?
- Name any two uses of water.
Section B – Fill in the Blanks (1 × 3 = 3 marks)
- __________ is the main source of heat on Earth.
- Coal and petroleum are examples of __________ fuels.
- __________ is the process of collecting rainwater.
Section C – True or False (1 × 3 = 3 marks)
- We can survive without oxygen for many days.
- Forests provide wood, fruits and medicines.
- Solar cookers use sunlight to cook food.
Section D – Match the Following (1 × 3 = 3 marks)
| Column I | Column II |
|---|---|
| a) Slate | i) Electricity production |
| b) Coal | ii) Roofing material |
| c) Natural gas | iii) Cooking fuel |
Section E – Short Answer (2 × 2 = 4 marks)
- Write two ways to conserve natural resources.
- Why are fossil fuels important?
Section F – Long Answer (3 marks)
- Explain the difference between renewable and non-renewable resources.
ANSWERS: SET – 3
Section A – Very Short Answer
- Define natural resources.
Answer: Resources obtained from nature like air, water, soil, forests. - What is rainwater harvesting?
Answer: Collecting and storing rainwater for later use. - Why is air important for living beings?
Answer: Because it contains oxygen needed for breathing. - Name any two uses of water.
Answer: Drinking, cooking, bathing.
Section B – Fill in the Blanks
- __________ is the main source of heat on Earth.
Answer: The Sun - Coal and petroleum are examples of __________ fuels.
Answer: fossil - __________ is the process of collecting rainwater.
Answer: Rainwater harvesting
Section C – True or False
- We can survive without oxygen for many days.
Answer: False - Forests provide wood, fruits and medicines.
Answer: True - Solar cookers use sunlight to cook food.
Answer: True
Section D – Match the Following
a) Slate → ii) Roofing material
b) Coal → i) Electricity production
c) Natural gas → iii) Cooking fuel
Section E – Short Answer
- Write two ways to conserve natural resources.
Answer: Using public transport; reducing wastage of water. - Why are fossil fuels important?
Answer: They provide energy for vehicles, cooking, electricity.
Section F – Long Answer
Explain the difference between renewable and non-renewable resources.
Answer: Renewable resources are those that can be regenerated naturally within a short time, such as air, water and sunlight. They are available again and again because nature keeps replenishing them. Non-renewable resources, on the other hand, take millions of years to form. Examples include coal, petroleum and natural gas. Once these are used up, they cannot be replaced quickly. Humans need to use non-renewable resources carefully because overuse can lead to shortages. Understanding the difference helps us use our resources wisely.
SET – 4 – Chapter 11 Nature’s Treasures – Practice Worksheet
Time: 40 minutes
Section A – Very Short Answer (1 × 4 = 4 marks)
- What is a windmill?
- Name two things we get from forests.
- What is meant by pollution?
- Define rocks.
Section B – Fill in the Blanks (1 × 3 = 3 marks)
- The percentage of nitrogen in air is __________.
- __________ are used to make tools, jewellery and machines.
- __________ helps plants to prepare food.
Section C – True or False (1 × 3 = 3 marks)
- Sunlight is not needed for plants.
- Earthworms help in loosening the soil.
- Fossil fuels take millions of years to form.
Section D – Match the Following (1 × 3 = 3 marks)
| Column I | Column II |
|---|---|
| a) Water | i) Non-renewable |
| b) Petroleum | ii) Renewable |
| c) Forests | iii) Home for animals |
Section E – Short Answer (2 × 2 = 4 marks)
- What is the role of the Sun in the growth of plants?
- Why should we reduce the usage of fossil fuels?
Section F – Long Answer (3 marks)
- What are the causes of air pollution? Suggest two ways to reduce it.
ANSWERS: SET – 4
Section A – Very Short Answer
- What is a windmill?
Answer: A device that uses wind energy to rotate blades and perform work like pumping water or generating electricity. - Name two things we get from forests.
Answer: Wood, fruits, medicines. - What is meant by pollution?
Answer: Contamination of air, water or soil by harmful substances. - Define rocks.
Answer: Hard, solid materials that make up the Earth’s crust.
Section B – Fill in the Blanks
- The percentage of nitrogen in air is __________.
Answer: 78% - __________ are used to make tools, jewellery and machines.
Answer: Minerals - __________ helps plants to prepare food.
Answer: Sunlight
Section C – True or False
- Sunlight is not needed for plants.
Answer: False - Earthworms help in loosening the soil.
Answer: True - Fossil fuels take millions of years to form.
Answer: True
Section D – Match the Following
a) Water → ii) Renewable
b) Petroleum → i) Non-renewable
c) Forests → iii) Home for animals
Section E – Short Answer
- What is the role of the Sun in the growth of plants?
Answer: Plants use sunlight to prepare food through photosynthesis. - Why should we reduce the usage of fossil fuels?
Answer: Because they cause pollution and are limited.
Section F – Long Answer
What are the causes of air pollution? Suggest two ways to reduce it.
Answer: Air pollution is mainly caused by smoke from vehicles, industries, and burning fossil fuels. Cutting down trees also reduces the purity of air as fewer trees means less oxygen and more carbon dioxide. Dust from construction and burning of garbage also pollutes the air. Polluted air can cause breathing problems and health issues.
To reduce it, we can use public transportation and plant more trees. We should also avoid burning waste and use cleaner fuels like natural gas or electricity.
SET – 5 – Chapter 11 Nature’s Treasures – Practice Worksheet
Time: 40 minutes
Section A – Very Short Answer (1 × 4 = 4 marks)
- What are human-made resources?
- Name any two fossil fuels.
- What is soil erosion?
- What is a natural resource?
Section B – Fill in the Blanks (1 × 3 = 3 marks)
- __________ is used to pump water using wind energy.
- Leaves falling and decaying enrich the __________.
- Freshwater available on Earth is very __________.
Section C – True or False (1 × 3 = 3 marks)
- Minerals are used to make mobile phones.
- Water pollution makes water unfit for drinking.
- Renewable resources get replenished quickly.
Section D – Match the Following (1 × 3 = 3 marks)
| Column I | Column II |
|---|---|
| a) Gold | i) Becoming scarce |
| b) Water pollution | ii) Precious metal |
| c) Forest cutting | iii) Dirty water |
Section E – Short Answer (2 × 2 = 4 marks)
- Explain any two uses of water in daily life.
- What happens when forests are cut down?
Section F – Long Answer (3 marks)
- Explain the importance of forests in maintaining the balance of nature.
ANSWERS: SET – 5
Section A – Very Short Answer
- What are human-made resources?
Answer: Resources created by humans using natural resources. - Name any two fossil fuels.
Answer: Coal, petroleum. - What is soil erosion?
Answer: The removal of soil by wind or water. - What is a natural resource?
Answer: A resource obtained from nature.
Section B – Fill in the Blanks
- __________ is used to pump water using wind energy.
Answer: Windmill - Leaves falling and decaying enrich the __________.
Answer: soil - Freshwater available on Earth is very __________.
Answer: limited
Section C – True or False
- Minerals are used to make mobile phones.
Answer: True - Water pollution makes water unfit for drinking.
Answer: True - Renewable resources get replenished quickly.
Answer: True
Section D – Match the Following
a) Gold → ii) Precious metal
b) Water pollution → iii) Dirty water
c) Forest cutting → i) Becoming scarce
Section E – Short Answer
- Explain any two uses of water in daily life.
Answer: Drinking and cooking; cleaning and bathing. - What happens when forests are cut down?
Answer: Soil erosion, loss of wildlife, reduced rainfall.
Section F – Long Answer
Explain the importance of forests in maintaining the balance of nature.
Answer: Forests play an important role in maintaining the balance of nature because they provide oxygen for all living beings. They absorb carbon dioxide, helping control climate and temperature. Forests are home to many animals, birds and insects, keeping biodiversity alive. Their roots help hold the soil together, preventing soil erosion and floods. They also help maintain rainfall patterns by holding moisture in the air. Without forests, the environment would become unbalanced, leading to many problems for humans and animals.