C. Give short answers for the following questions.
1. Name the factors and agents which help in weathering.
2. How are ox-bow lakes formed?
3. How are flood plains formed?
4. Why is the work of wind limited to a few metres above the ground?
D. Give long answers for the following questions.
1. How does running water carry out its work?
2. Explain the erosional and depositional work of sea waves.
3. Explain the erosional work of glacier.
4. Describe the depositional work of wind.
Answers
Answer:
Water, acids, salt, plants, animals, and changes in temperature are all agents of weathering and erosion.
Answer:
1. raining water
rainfall
snow
2. When deposition finally seals off the cut-off from the river channel, an oxbow lake is formed.
3.A floodplain is an area of land which is covered in water when a river bursts its banks.
4. The work of wind is limited to a few metres above the ground because wind does not carry with it rock particles high up in the air. ... It is also because of the friction exerted by the ground, due to which the work by the wind is slower.
D
1. The energy that makes running water move comes from gravity. As water flows downslope from a higher to a lower elevation, the gravitational potential energy stored in water transforms into kinetic energy. ... Scouring: Running water can remove loose fragments of sediment, a process called scouring.
2. Wave energy does the work of erosion at the shore. ... A wave-cut platform is the level area formed by wave erosion as the waves undercut a cliff. An arch is produced when waves erode through a cliff. When a sea arch collapses, the isolated towers of rocks that remain are known as sea stacks.
3. flowing ice erodes the land and deposits the material elsewhere. Glaciers cause erosion in two main ways: plucking and abrasion. Plucking is the process by which rocks and other sediments are picked up by a glacier. They freeze to the bottom of the glacier and are carried away by the flowing ice.
4 . In deserts, wind picks up small particles and leaves behind larger rocks to form desert pavement. Moving sand may sand blast rocks and other features to create ventifacts. The sand is transported until it is deposited in a sand dune.