Class 3 Science Worksheet on Rocks and Soil

Class 3 Science Worksheet on Rocks and Soil

 

Choose the Correct Option.

1. What are rocks made up of?

1. a) Tiny green minerals
2. b) Soil particles
3. c) Gravel and sand
4. d) Rotted plants and animals

 

2. Which rock is considered the hardest?

1. a) Granite
2. b) Coal
3. c) Diamond
4. d) Chalk

 

3. How is soil formed?

1. a) By the action of sunlight, water, and wind on rocks
2. b) By the decomposition of rocks into smaller pieces
3. c) By mixing gravel and sand particles
4. d) By the rotted remains of plants and animals

 

4. What is humus?

1. a) Tiny pieces of rocks
2. b) Dark brown or black rotted plants and animals
3. c) Soil particles with large spaces between them
4. d) A layer of clay floating on water

 

5. Which type of soil cannot hold much water?

1. a) Clayey soil
2. b) Sandy soil
3. c) Loamy soil
4. d) Gravel soil

 

6. What type of soil is smooth to the touch and can be easily shaped?

1. a) Clayey soil
2. b) Sandy soil
3. c) Loamy soil
4. d) Gravel soil

 

7. Which soil type is a mixture of sand and clay?

1. a) Clayey soil
2. b) Sandy soil
3. c) Loamy soil
4. d) Gravel soil

 

8. What do plants obtain from the soil?

1. a) Sunlight and air
2. b) Water and minerals
3. c) Humus and gravel
4. d) Rocks and sand

 

9. Which soil type is most suitable for rice cultivation?

1. a) Clayey soil
2. b) Sandy soil
3. c) Loamy soil
4. d) Gravel soil

 

10. What materials can be made from soil?

1. a) Wood and metal
2. b) Cement and bricks
3. c) Glass and plastic
4. d) Paper and cloth

 

Fill in the blanks:

1. Rocks are made up of tiny green minerals, and some rocks are composed of ________ minerals.
2. The action of sunlight, water, and wind breaks rocks into smaller pieces, eventually forming ________.
3. Soil consists of two main components: tiny pieces of rocks and rotted pieces of ________.
4. Rotted plants and animals are called ________, which are dark brown or black in color.
5. Soils collected from different places can have different colors, such as light brown, dark brown, or even ________.
6. The layer of soil containing large particles, such as sand particles, is known as ________.
7. The layer of soil containing very fine particles that cannot be seen separately is called ________.
8. Clayey soil contains tiny particles and is smooth to the touch, mainly consisting of ________.
9. Sandy soil is characterized by large particles with lots of spaces between them, making it easy for ________ to go through.
10. Loamy soil, a mixture of sand and clay, can hold both ________ and air, making it ideal for plant growth.

 

State True or False

1. Rocks are made up of tiny green minerals.
2. Soil is formed through the decomposition of rocks into smaller pieces.
3. Humus is a light brown or black material that is good for the healthy growth of plants.
4. Sandy soil can hold a large amount of water due to the spaces between its particles.
5. Loamy soil is a mixture of sand and clay and can hold both water and air.
6. Clayey soil is smooth to the touch and can be easily shaped.
7. Plants obtain water and minerals from the soil.
8. Rice grows well in sandy soil.
9. Manures and fertilizers are added to the soil to make it less fertile.
10. Cement, bricks, and glass can be made from soil.

 

Match the following pairs:

Column A	Column B
1. Clayey soil	A. Holds both water and air
2. Sandy soil	B. Dark brown or black material
3. Humus	C. Contains large particles with spaces
4. Loamy soil	D. Easily breaks into smaller pieces
5. Rocks	E. Made up of tiny green minerals
6. Gravel	F. Mixture of sand and clay
7. Weathering	G. Suitable for rice cultivation
8. Decomposition	H. Made from different rocks
9. Minerals	I. Breaks rocks into smaller pieces
10. Rice	J. Rotted plants and animals

      

Answer the following Questions:

    Q: What are rocks made up of?

    Q: How is soil formed?