Solution Buddy

Answer the following question in brief:

(1) How is black basalt on?

Ans.

i) In Maharashtra , Black Basalt is mostly found in the form of layers in horizontal , slightly sloped areas.

ii) These layers of Black Basalt are formed as the Lava erupted billions of years ago and cooled on the ground.


(2) What are the main components of Black Basalt?

Ans.

i)Black compact Basalt ,
ii) Hardy muddy ,
iii) Soft muddy ,
iv) Limestone ,
v) Sandstone ,
vi) Red layer ,
vii) Slit ,
viii) Sandy slit ,
ix) Clay.



(3) Explain the main process of erosion.

Ans.

i) The process by which rocks are transform into soil is called erosion.

ii) Due to constant changes in air , water, temperature , and pressure , rocks and boulders break up Erode and eventually turn into fine particles and become soil.


(4) State the types of soil particles.

Ans.

i) Stone- Greater than 2 mm

ii) Sand- 0.5 mm to 2 mm

iii) Clay- Smaller than 0.0002 mm

iv) Slit- 0.0002 mm to 0.5 mm


(5) What is permeability of the rock?

Ans.
The ability to carry fluids ( gas and liquid ) through the rocks without any change in the original from the rock is called permeability of the rock .


(6) How does soil help land fertility?

Ans.

i) The remains of plants and animals are mixed in the soil.

ii) Microorganisms in the soil decompose these remains.

iii) And thus it produces various compounds in the soil and land becomes fertile.