Humus helps in making soil

1

(a)

thick

(b)

hard

(c)

porous

(d)

dead

The soil that can be moulded into any shape is

1

(a)

silt

(b)

sandy

(c)

loamy

(d)

clayey

Soil absorbs water due to its

1

(a)

compactness

(b)

porosity

(c)

hardness

(d)

dryness

The hardest layer of the soil is

1

(a)

The top soil

(b)

The middle layer

(c)

The third layer

(d)

The lower most layer

Percolation rate is highest in

1

(a)

Sandy soil

(b)

Loamy soil

(c)

Clayey soil

(d)

Equal in all

The view of soil zones or layers is known as_____

1

(a)

soil profile

______ soil is used to make pots, toys and status

1

(a)

clayey

Dung of______.is mixed in the soil used to make surahi

1

(a)

horse

Soil from a crop field_______be used to make toys

1

(a)

cannot

The components of loamy soil are_______,________and_______

1

(a)

sand, slit and clay

Name the different types of soil

2

(a)

(i)Sandy soil, (ii) Clayey soil, (iii)Loamy soil.

What is humus?

2

(a)

The rotting dead matter in the soil is called humus.

Arrange the following in descending order on the basis of the size: Clay, Gravel, Fine sand, stone, coarse sand and Silt.

2

(a)

Stone> Gravel> Course sand> Fine sand> Silt > Clay

Boojho wondered why there was a difference in the absorption of water in the two squares

2

(a)

Because different soil are used to make the two squares.

Boojho heard from his neighbour that 8-10 days after the rain, the level of water in a pond or well rises. Which type of soil will allow water to reach a well faster and in greater amount?

2

(a)

Sandy Soil

Which type of soil absorbs more water but allows less water to percolate?

3

(a)

Name two soil types used for cultivation.

3

(a)

Explain the term humus that is generally found in the uppermost layer of soil.

3

(a)

Name the various factors which affect the nature of soil

3

(a)

What are the various components of soil?

3

(a)

A man digging a pit found that he could dig with ease initially but digging became difficult as he went deeper. He could not big beyond a depth 5 feet. Provide a suitable scientific explanations

5

(a)

Explain the soil profile

5

(a)