GEOGRAPHY (316) | NIOS FREE SOLVED ASSIGNMENTS (2020-21) | TMA-20-21


GEOGRAPHY (316) 

NIOS SOLVED ASSIGNMENTS (2020-21) 

 Note: (i) All questions are compulsory. The marks allotted for each question are given besides the questions.

(ii) Write your name, enrollment number, Al name and subject on top of the first page of your answer sheet.

 

Q.1. Answer any one of the following question in about 40-60 word.

(a) “The earth’s crust is unstable”> Explain its two effects on the earth’s surface.

Ans. The earth crust is unstable due to which natural disasters comes.


Earthquake: The earth curst is a thin as well as the hard shell which actually floats on the mantle. This crust of earth included the many pieces which we known as the tectonic plates they are the moving plates these plate can slide past each other. As the result of their movement of plates the huge energy can be released result in the earthquakes which can be really disastrous.

 

Tsunami: The occurrence of the earthquake may result in the generation of powerful waves whenever the earthquake comes in the ocean. These powerful waves are known as Tsunamis. Earthquakes have the ability to unleashes the underwater landslides result in Tsunami.

 

Q. 2. Answer any one of the following question in about 40-60 words.

(a) In which way, the thought of Pratt is different from airy?

 

Ans. Airy, the geologist said that the density is uniform with varying thickness whereas Pratt deduced that there is aninverse relationship between height and density and density varies with varying thickness. Airy deduced that the roots below mountain are deeper the roots below the plain whereas according to the Pratt there is no formation of roots but only compensation level. 


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