Extra Questions for Chapter 11 Nature’s Treasures Class 6 Science Curiosity
Class 6 Science Nature’s Treasures Extra Questions
Multiple Choice Questions (MCQ)
Question 1. What percentage of air is composed of nitrogen?
(a) 21%
(b) 78%
(c) 1%
(d) 50%
Answer
(b) 78%
Question 2. Which of the following is NOT a source of freshwater?
(a) Rivers
(b) Lakes
(c) Oceans
(d) Wells
Answer
(c) Oceans
Question 3. What is the primary use of solar panels?
(a) To clean water
(b) To generate electricity
(c) To grow plants
(d) To store gas
Answer
(b) To generate electricity
Question 4. Which type of resource is coal classified as?
(a) Renewable
(b) Non-renewable
(c) Infinite
(d) Sustainable
Answer
(b) Non-renewable
Question 5. What is the main purpose of Van Mahotsav?
(a) To promote water conservation
(b) To increase green cover
(c) To celebrate wildlife
(d) To educate about soil
Answer
(b) To increase green cover
Fill in the Blanks
1. Water from oceans and seas is _____ and not suitable for drinking.
2. Air is primarily composed of _____, which is essential for respiration.
3. ______ is a week-long event celebrated to promote forest conservation.
4. Solar energy can be harnessed using _____ panels.
5. Fossil fuels are formed from the remains of _____ organisms.
Answer
1. salty
2. oxygen
3. Van Mahotsav
4. solar
5. ancient
True or False
1. Air is visible and can be seen directly.
2. Freshwater is easily accessible from oceans.
3. Forests are important for biodiversity and climate regulation.
4. Stepwells are a modern method used for water harvesting.
5. Renewable resources can be replenished naturally.
Answer
1. False
2. False
3. True
4. False
5. True
Match the Following
|
Column A |
Column B |
|
A) Nitrogen |
1) Non-renewable resources |
|
B) Oxygen |
2) Habitat for wildlife |
|
C) Water |
3) Covers two-thirds of Earth’s surface |
|
D) Forests |
4) 21% |
|
E) Fossil Fuels |
5) Essential for respiration |
Answer
|
Column A |
Column B |
|
A) Nitrogen |
4) 21% |
|
B) Oxygen |
5) Essential for respiration |
|
C) Water |
3) Covers two-thirds of Earth’s surface |
|
D) Forests |
2) Habitat for wildlife |
|
E) Fossil Fuels |
1) Non-renewable resources |
One Word Answer
Question 1. What essential gas do we need for respiration?
Answer
Oxygen
Question 2. What is a significant use of natural gas?
Answer
Cooking
Question 3. What is the moving air called?
Answer
Wind
Question 4. Name one use of water in daily life.
Answer
Drinking
Question 5. Name the gas in the air that is essential for human survival.
Answer
Oxygen
Question 6. What is the main source of energy for all living beings on Earth?
Answer
The Sun
Question 7. What is the main source of energy for life on Earth?
Answer
Sunlight
Question 8. What do we call the process of collecting rainwater?
Answer
Rainwater harvesting
Question 9. What type of resource is coal classified as?
Answer
Non-renewable resource
Question 10. What percentage of air is nitrogen?
Answer
78%
Question 11. Which festival promotes forest conservation in India?
Answer
Van Mahotsav
Question 12. What do we call resources created by humans using natural resources?
Answer
Human-made resources
Question 13. What do plants produce using sunlight?
Answer
Food
Question 14. Which part of the Earth is primarily covered by water?
Answer
Oceans and seas
Very Short Answer Questions
Question 1. How are rocks important in construction?
Answer
They are used to build houses, roads, and other structures.
Question 2. What is the main threat to forest cover?
Answer
Human activities like logging and urbanization.
Question 3. What is the role of forests in the ecosystem?
Answer
They provide habitat, food, and maintain ecological balance.
Question 4. What are the two main types of natural resources?
Answer
Renewable and non-renewable resources.
Question 5. What is the primary component of air?
Answer
Nitrogen (78%) is the primary component of air.
Question 6. What is a major consequence of water pollution?
Answer
It makes water unsafe for drinking.
Question 7. Why is water from oceans not suitable for drinking?
Answer
It is salty (saline) and not suitable for drinking or agriculture.
Question 8. How can we conserve water at home?
Answer
Turn off the tap while brushing teeth.
Question 9. What happens to trees in the Chipko Movement?
Answer
They are hugged to prevent cutting.
Question 10. What is the importance of soil in the environment?
Answer
It supports plant life and biodiversity.
Question 11. Write the name of two objects which are inflated by air.
Answer
- Balloon
- Bus tyre
Question 12. What do you understand by the terms wind and breeze?
Answer
Moving air is called wind and gently moving air is called breeze.
Question 13. Name the sources of water.
Answer
Sources of water on the Earth are: seas, oceans, rivers, springs, tube wells, etc.
Short Answer Questions
Question 1. How do forests contribute to the conservation of soil?
Answer
Forests contribute to soil conservation by preventing soil erosion through the roots of trees, which hold the soil in place, and by enriching the soil with nutrients through the decaying leaves and organic matter.
Question 2. Explain the importance of rainwater harvesting.
Answer
Rainwater harvesting is important as it helps in collecting and storing rainwater for future use, especially in regions with limited water supply. It reduces dependence on groundwater, prevents water wastage, and provides a sustainable solution for water conservation.
Question 3. Why are fossil fuels considered non-renewable resources?
Answer
Fossil fuels are considered non-renewable because they take millions of years to form from the remains of dead plants and animals. Once used, they cannot be replenished within a human lifespan, leading to eventual depletion.
Question 4. What role do solar panels play in conserving natural resources?
Answer
Solar panels help conserve natural resources by converting sunlight into electricity, reducing the need for fossil fuels, which are non-renewable. This clean energy source reduces air pollution and lowers the carbon footprint.
Question 5. Describe the concept of renewable and non-renewable resources with examples.
Answer
Renewable resources are those that can be replenished naturally over time, such as solar energy, wind, and water. Non-renewable resources, like coal, oil, and natural gas, are finite and cannot be replaced once depleted.
Question 6. What is meant by conservation of water? Suggest three methods to conserve water.
Answer
Careful and economical use of water and avoiding its wastage is called conservation of water:
- Use only the limited quantity of water.
- To conserve water, we should plant more and more trees.
- By collecting rainwater in tanks, ponds or by constructing check dams.
Long Answer Questions
Question 1. What are the differences between renewable and non-renewable natural resources?
Answer
|
Renewable natural resources |
Non-renewable natural resources |
|
1. These natural resources do not get depleted or exhausted even after their continuous consumption. |
1. These natural resources get depleted or exhausted with continuous human consumption. |
|
2. They get replenished through natural processes during a finite amount of time. |
2. They do not get replenished through natural processes during a finite amount of time. |
|
3. For example, air, water and forest. |
3. For example, minerals, soil, rocks, coal, petroleum and natural gas. |
Question 2. What is rainwater harvesting? Describe the method of rainwater harvesting.
Answer
Rainwater harvesting is the collection of rainwater and storing for future use. In this system rainwater in collected from the rooftops by means of pipes into storage tank for later use. Recycling water and water harvesting also help in saving water.
Methods of Rainwater Harvesting:
- Rooftop rainwater harvesting. In this system, the rainwater from the rooftop is collected in a storage tank, through pipes.
- Another method, a big pit is dug near house for collecting rainwater. This pit is filled with different layers of bricks, coarse gravels and sand or granite pieces.
Question 3. Explain the following observations very briefly.
(a) A firki does not rotate in a closed area.
(b) The arrow of weather cock points towards a particular direction at a particular moment.
(c) An empty glass in fact is not empty.
(d) Breathing through mouth may harm you.
Answer
(a) Lack of air movement
(b) Shows the latest direction of the wind.
(c) Even the so called empty glass is not in fact empty. It is filled with air.
(d) You may inhale dust if present in air which may prove harmful.