Download 7th Class Geography Notes (Unit-2) for Islamabad Model Schools & Colleges


What is the cause of Gully Erosion?
Gully erosion occurs by the abrasion and plucking of rock pieces.
Give an example of Biological Weathering.
Some animals develop holes or burrows into the rocks which causes the rock to break and disintegrate. For example worms, termites and other insects.
Define Chemical Weathering and give an example.
It is decomposition of rocks through chemical processes. Carbonation is the example of Chemical Weathering.
Briefly describe frost action on rocks.
· Disintegration of rocks due to melting of ice in the pore spaces and fractures of rocks is called frost action on rocks.
· When water in rock pores freezes, its volume increases which create a significant amount of pressure on rocks


Define Erosion and write measures to check Erosion.
Erosion is the process in which moving agents like wind, water or glacier break rock surfaces and carry away the broken materials.
Measures to Check:
· Plantation of trees provides protection to surface.
· Construction of Embankments along nalas and river beds also check erosion.
Write a detailed account of Water Erosion.
Water is powerful agent of erosion. Streams and rivers widen and deepen their courses by erosion. Water erosion is carried out by three processes:
i) Hydraulic action
ii) Abrasion
iii) Solution.
What is a Mass Wasting? Give some measures to check Mass Wasting.
The sudden bulk transfer of rock materials downwards along the slope under the influence of gravity is called Mass Wasting.
Measures to Check:
· Reduce gradients of steeper slopes along roads;
  • Remove unstable rocks;
· Build retaining walls or structures to hold back possible slides;
· Construct more surface drainage channels and ditches;

7th Class Geography Notes for Islamabad Model Schools and Colleges



10th Class Notes,72,10th Class Old Papers,2,5th Class Notes,6,6th Class Notes,34,6th Class Old Papers,1,7th Class Notes,33,7th Class Old Papers,1,8th Class Notes,63,8th Class Old Papers,1,9th Class Notes,82,9th Class Old Papers,2,Articles,1,Download Free E-Books on IT,1,Home Tutors,3,Home Tutors in Islamabad & Rawalpindi,8,Home Tutors in Lahore,2,Home Tutors in Multan,1,Home Tutors in Wah Cantt & Taxila,3,Information Technology,1,Miscellaneous,10,News & Events,2,Notes & Handouts,292,Old Papers,8,Solved AIOU Assignments,1,Video Lectures,1,
Download Class Notes: Download 7th Class Geography Notes (Unit-2) for Islamabad Model Schools & Colleges
Download 7th Class Geography Notes (Unit-2) for Islamabad Model Schools & Colleges
Download 7th Class Geography Notes (Unit-2) for Islamabad Model Schools & Colleges
Download Class Notes
Loaded All Posts Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THE DOWNLOAD LINK IS LOCKED Please share to unlock the download link Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy