Our Resources
Theme 6 : Natural Resources (My Watch Tower Social Studies)
Time to Camp - Exercises
A. Choose the correct answers and fill the OMR box.
1. Water is used to produce _________ electricity.
a. hydro. [✓]
b. solar. [ ]
c. mill. [ ]
d. light. [ ]
2. Coal mine is found in ________ .
a. Uttar Pradesh. [ ]
b. Jharkhand. [✓]
c. Tamil Nadu. [ ]
d. Arunachal Pradesh. [ ]
3. _________ are good conductors of heat and electricity.
a. Solar panels. [ ]
b. Non-metals. [ ]
c. Metals. [✓]
d. All of these. [ ]
4. At home, solar energy is used for ________ .
a. cooking. [✓]
b. washing. [ ]
c. weaving. [ ]
d. None of these. [ ]
5. ___________ is not a renewable resource.
a. Sun. [ ]
b. Coal. [✓]
c. Water. [ ]
d. Wind. [ ]
B. Fill in the blanks.
1. Natural Resources are naturally occurring substances that are found within the Earth's crust.
2. Forests and animals are Non-renewable natural resources.
3. Diamond is Non-metallic mineral.
4. Cooking gas is an example of natural gas.
5. Coal is formed from the remains of dead plants and animals.
C. State whether true or false.
1. Solar energy pollutes the environment. [F]
2. The air has been polluted due to harmful gases released from the burning of fossil fuels. [T]
3. Metals such as iron, steel and aluminium are renewable resources. [T]
4. Petroleum is found between rocks, both under the sea and on land. [T]
5. We should not save electricity by switching off the electrical gadgets after use. [F]
D. Answer these questions.
1. What do you mean by natural resources? Give examples.
= Natural resources are raw materials that we get from the Earth to make other products.
For example, wind is a natural resource. We generate electricity from the wind using windmills.
2. Distinguish between renewable and non-renewable natural resources. Give three examples each.
=
|
Renewable Resources |
Non-Renewable Resources |
|---|---|
|
1. Natural resources that can be replenished are known as renewable
resources. |
1. Non-renewable resources are those resources that have been
accumulated in nature over a long period of time and cannot be replaced
sooner when exhausted. |
|
2. These resources can be used multiple times and are plenty in
nature. |
2. They are available in limited amount on Earth and can be exhausted
due to overuse. |
|
3. They do not pollute the environment. |
3. They pollute the environment while being used. |
3. What do you mean by ores?
= Minerals from which metals are obtained are called ores.
4. State the differences between metallic and non-metallic minerals.
=
|
Metallic Minerals |
Non-Metallic Minerals |
|---|---|
|
1. Metals are hard and strong. |
1. Non-metals are soft and can be broken easily. |
|
2. They have lustre. |
2. They are dull. |
|
3. They are good conductors of heat and electricity. |
3. They are bad conductors of heat and electricity. |
|
4. Metals are malleable or can be moulded into different shapes
easily. |
4. Non-metals are not malleable and may break easily. |
5. Why should we conserve our resources? List the ways in which we can conserve them.
= We need to conserve our natural resources for the future generations.
We can conserve them by following the steps below :
❐ Plant more trees and save our forests.
❐ Save water by using it cautiously.
❐ Not pollute our water bodies.
❐ Save electricity by switching off the electrical gadgets after use.
❐ Not pollute the air by reducing the usage of fossil fuels.
❐ Use alternative sources of energy.
Picture Study
Look at the picture and answer the questions.
1. What type of natural resource is being shown here?
= Solar energy is being shown here.
2. How is this resource useful to us?
= Plants prepare their food by using this energy. It can be used for cooking and to generate electricity.
3. What will happen if we run out of this resource?
= If we run out of this resource, the whole world will come to a crisis. Trees would not be able to produce food by conducting photosynthesis. All the other necessary things would not be produced. The whole world would be destroyed.