LESSON - 5 NATURAL RESOURCES Our earth consists of essential resources which support life. Water, soil, air, minerals, plants, animals, etc., which occur naturally on Earth are called resources. These resources are necessary for all living organisms including man. These are the most valuable things in the progress of mankind.KSEEB Solutions for Class 5 EVS Chapter 5 Natural resources in English Medium Sample answers to important questions of this chapter are given here.
Solve the following riddles to identify natural resources.
1. You can't live without me
Every plant, tree, and animal needs me
Nobody can see me.
Who am I? ______
Answer- AIR
2. I occupy a major portion of the earth
I satisfy all your thirst
I make animals, trees, and plants cool
Who am I? ______
Answer-WATER
3. I let you live on me
I help to grow plants and trees
I support all life on me
Who am I? ______
Answer- SOIL
4. I give fruits and nuts I spread cooling shades No life without me Who am I? ______
Answer- TREES AND PLANTS
5. Vehicles like buses, lorries, and cars use me to run Took thousands of years to form me From underneath the soil you extract me. Who am I? _____
Answer- PETROL/DIESEL
6. Plate, tumbler, and vessels are made up of me Beautiful jewels are made up of me My ore will be hardened by you Who am I? _____
Answer- MINERALS
7. Darkness drives away from me Bright light comes from me A source of energy, that is me Who am I? ____
Answer- SUN
Put the following resources into the suitable baskets, by drawing lines.
Make a list of the activities done using solar energy.
Answer- Solar energy is a renewable, inexhaustible, and affordable form of energy. It can be used to cook food, heat water, and generate electricity. Furthermore, the electrical energy generated by solar energy can be stored in solar cells.
Do this: Take two pots filled with soil. Put a bean seed in each pot. Keep one pot in a place with sunlight and another pot in a dark corner. Water the pots daily. Observe the changes after fifteen days. Record what you have observed.
Answer- In a pot placed in a sunny place, bean seeds germinate well and grow into a plant. But plants do not grow in a pot kept in darkness. What we know from this is that plants need sunlight along with water to grow well.
Make a list of activities for which soil is used.
Answer- Soil provides many services and many products. Plants grown in soil can be used for food, clothing, entertainment, cosmetics, building materials, medicine, and more. The minerals that make up clay particles can be used for paints, make-ups, and medicines, or shaped into bricks, plaques, and vases.
What happens to the topsoil in the following circumstances? Discuss with your friends. 1 When the wind is stormy
Answer- When strong winds blow, the topsoil along with the organic matter is carried away by the wind. This happens more often when the land is not covered with grass or plants. Such conditions are very common in desert and semi-desert regions where strong winds blow very frequently.
2 When there is water current after rain. The following measures are taken to preserve the topsoil from erosion. Observe the pictures. Note down what you have learned.
Answer - techniques that can help in controlling soil erosion are as follows:
(i) Contour Farming
(ii) Strip Cropping
iii) Terracing
(iv) Gully Reclamation
(v) Shelter Belts!
Observe these pictures and make a list of the uses of forests. Discuss some other uses of forests with your friends.
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Answer-
- A forest is also a natural resource.
- Forests provide fruits, flowers, herbs, and trees.
- Forests are also a refuge for tribals.
- Soil erosion (erosion of topsoil) by forests is Preventable.
- Forest trees increase the amount of oxygen.
- Forests provide us with oxygen, shelter, employment, water, nutrition, and fuel. As many people depend on forests, the fate of our forests may determine our future.
Conservation of forests is everyone's responsibility. Why? Write here.
Answer-Forests are one of the most important natural resources found on earth. Trees in forests provide oxygen which is essential for the existence of life. Forests filter air and reduce pollution. Forests provide food security. Forests help mitigate climate change. Forests are an important part of the water cycle. Forests protect crops from the wind. Forests prevent soil erosion. Forests provide medicine. They help to pour rain.
Name three fuels used to run vehicles.
Answer- Petrol, Diesel, Coal, Kerosene.
Name three fuels used to cook food at home.
Answer- Wood, LPG, Kerosene Oil, Biogas.
Write examples for the following.
Solid fuel: __________________
Answer-Coal, wood
Liquid fuel: __________________
Answer-Petrol, Diesel, Kerosene.
Gaseous fuel: __________________
Answer- LPG, Biogas.
What measures can be taken to conserve the following fuels? Write here.
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Look at the following pictures and write the uses of minerals.
Answer-
- Minerals are used to build houses, schools, libraries, hospitals, offices, and shops.
- For making utensil accessories.
- To make jewelry.
- To make machines.
Write the uses of the natural resources given in the table.
List out the materials used in the construction of your
house. Identify by marking (✔) the natural resources
among them. What have you learned from this activity?
Answer-
- Soil ✔
- Stone ✔
- Cement
- wood ✔
- Iron ✔
- Glass ✔
- Water
- Soil ✔
- Brick ✔
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