Weathering

Q. How does rock break down into soil?

Q.

Differentiate between physical and chemical weathering. [2 MARKS]

Q.

How does climate of a place affect the soil formation

Q.

The process of breaking up of rocks to form soil by the action of the wind, water, ice, climate and plants is called ___.

Q.

Which of the following describes weathering?

1. The breaking down of rocks, soil and minerals by external agents(wind, rivers etc) is called weathering.

2. The combination of rocks, soil and minerals is called weathering.

3. Change in climate is called weathering.

4. When rocks melt due to intense heat, it is called weathering.

Q.

Soil is made up of other things in addition to rock particles. Other than rock particles, soil contains________.

1. air and water

2. water and plants

3. minerals, organic matter, air and water

4. water air and plants

Q.

Question 7

Read the following statements and give the appropriate terms for each of them.

(a) The process of breakdown of rocks by the action of wind, water, sunlight.
(b) Removal of top soil during heavy rains or strong winds
(c) Accumulation of wastes in the soil generated by human activity which alter the features of soil.
(d) The process of movement of water into deeper layers of soil.

Q.

Which of the following factors affect the soil of a particular place or region? (You can choose more than one option)

1. Wind and rainfall

2. Temperature and light

3. Humidity

4. All of these

Q.

How is soil formed?

1. Settling of dust

2. Weathering and erosion of rocks

3. Volcanic activity only

4. Volcanic activity and erosion of rocks

Q.

Question 4
Explain how soil is formed.

Q. Which of the following regulates soil formation?

1. Glacier
2. Wind
3. All of the above
4. Water

Q.

The process of breaking up of rocks to form soil by the action of the wind, water, ice, climate and plants is called ___.

Q.

The mixture of rock particles of different sizes, various other materials and humus is called soil.

1. True
2. False

Q. The soil is formed by the breaking down of rocks by the action of _____.

1. water
2. climate
3. wind
4. all of these

Q.

How did soil appear on earth?

1. Humans have dug it beneath the earth's surface

2. Asteroid collisions with earth

3. From the dead remains of all plants and animals

4. Constant weathering and erosion of rocks

Q. Which of the following factors does not affect the weathering of rocks?

1. 
   Wind
2. 
   Type of climate
3. 
   Water
4. 
   Size of rocks

Q.

How is soil formed?

1. Settling of dust

2. Volcanic activity only

3. Volcanic activity and erosion of rocks

4. Weathering and erosion of rocks

Q. Which of the following factors is not responsible for soil formation ?

1. Climate
2. Colour of the rocks
3. Water
4. Wind

Q. The process of breaking down of rocks into smaller pieces is known as ________ .

1. Absorption
2. Weathering
3. Wind
4. Soil Erosion

Q. is the process of breaking up rocks by wind, water, salts, acids, plants, and climate.

1. Erosion
2. Weathering
3. Separation

Q. Which of the following types of soils is best suited for growing plants?

1. Loamy
2. Clayey
3. Sandy
4. Bedrock

Q. Differentiate between physical and chemical weathering.

Q. Define weathering in 100 words

Q. The process of breaking down of rocks into smaller pieces is known as ________ .

1. 
   Soil
2. 
   Percolation
3. 
   Water absorption
4. 
   Weathering

Q. Classify the following into slow and fast changes:-
Weathering of Rocks

Q. The process of breaking down of rocks into smaller pieces is known as ________ .

1. 
   Soil
2. 
   Weathering
3. 
   Water absorption
4. 
   Percolation

Q.

Question 5

Soil has particles of different sizes. Arrange the words given below in increasing order of their particle size.
$\begin{array}{c}Rock,Clay,Sand,Gravel,Silt\end{array}$

Q. What is meant by Weathering ?

Q. Which of the following factors is not responsible for weathering?

1. Action of water
2. Action of wind
3. Size of rocks
4. Type of climate