Answer the following questions in not more than 100 words.
1. What are the factors that influence the rates of weathering and erosion?
2. Describe the formation of a delta.
3. Give reasons why the action of wind is more prominent in dry regions.
4. Why is soil conservation necessary? Mention a few ways to protect soil from erosion.
TL
dancuar
Answers
1. What are the factors that influence the rates of weathering and erosion?
Ans:] Rainfall, heat and moisture are the 3 main factors which affect the rate of weathering and soil erosion. Weathering happens more quickly in hot and wet climates. Wind is another major factor affecting soil erosion.
2. Describe the formation of a delta.
Ans:] Deltas are wetlands that form as rivers empty their water and sediment into another body of water, such as an ocean, lake, or another river. Although very uncommon, deltas can also empty into land. A river moves more slowly as it nears its mouth, or end.
3. Give reasons why the action of wind is more prominent in dry regions.
Ans:] The action of wind is more prominent in deserts because there is little vegetation cover and the soil cover is loose. As such, sediments get easily carried and deposited by winds. Besides, absence of other agents of erosion like water and ice makes wind the most prominent weathering agent in the deserts.
4. Why is soil conservation necessary? Mention a few ways to protect soil from erosion.
Ans:] Soil conservation is important because it saves the soil through harsh weather and stops erosion. While soil is conservating it's getting more nutrients. The more we conserve soil the more crops grow, then we can sell the crops and get money. You can protect soil erosion from :
- Maintaining a healthy, perennial plant cover.
- Mulching.
- Planting a cover crop – such as winter rye in vegetable - gardens.
- Placing crushed stone, wood chips, and other similar materials in heavily used areas where vegetation is hard to establish and maintain.