SELECT * FROM question_mgmt as q WHERE id=7247 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=11 AND subId=70 AND chapterId=520 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 7th social-science-our-environment-geography Our Changing Earth i some rocks have a shape of a mushroom ii f

Question:

(i) Some rocks have a shape of a mushroom.
(ii) Flood plains are very fertile.
(iii) Sea caves are turned into stacks.
(iv) Buildings collapse due to earthquakes.

Answer:

(i) In desert, wind is an active agent for soil erosion which erode the lower section of the rock more than the upper part of the rock. Therefore, some rocks have a shape of a mushroom which contain narrower base and wider top.

(ii) Flood plains are very fertile because floods deposit layers of fine soil and other material which is known as sediments which is ideal for cultivation along with its banks.

(iii) When cavities in sea caves become larger, only the roof of the caves remain forming sea arches. Further, erosion breaks the roof and only walls are left which forms the stacks.

(iv) During earthquakes, vibrations travel outwards from the epicenter as waves and propagate through the surface of the earth which produces sudden movements which leads to the collapse of buildings.


< Previous Question

Next Question >

SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='11' AND subId='70' AND ex_no!=0 AND status=1 and id!=7247 ORDER BY views desc, last_viewed_on desc limit 0,10

  • Popular questions of class 7 Social Science - Our Environment (Geography)

SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='11' AND subId='70' AND ex_no!=0 AND status=1 and id!=7247 ORDER BY last_viewed_on desc limit 0,10

  • Recently Viewed Questions of Class 7 Social Science - Our Environment (Geography)

Comments

  • Answered by Ekta Mehta
  • 4 months ago

Taking Screenshots on your Samsung Galaxy M31s is very easy and quick.

  • Answered by Ekta Mehta
  • 4 months ago

Taking Screenshots on your Samsung Galaxy M31s is very easy and quick.

  • Answered by Ekta Mehta
  • 4 months ago

Taking Screenshots on your Samsung Galaxy M31s is very easy and quick.

Comment(s) on this Question


NCERT Solutions

Quick Links

Resources

Support