Class 5 Exam > Class 5 Notes > Science Class 5 > Worksheet: Soil Erosion And Conservation - 2
Soil Erosion And Conservation - 2 Class 5 Worksheet Science
Q1: Fill in the blanks.
(i) _______ of rocks and stones over many years results in the formation of soil.
(ii) The removal of fertile top soil is called _________.
(iii) _________ and _________ are the two main causes of soil erosion.
(iv) _________ acts as a soil-binders to prevent soil erosion.
(v) _________ of hill sides loosens the soil helping in soil erosion.
(vi) In between crops called the ________ crops can be grown to protect the soil.
(vii) Earth Day is celebrated every year on __________.
(viii) The Hwang Ho river which changes its course every year is in __________.
Q2: Multiple Choice Questions (MCQs).
(i) Which of the following is NOT be found in topsoil?
(a) humus
(b) minerals
(c) sediment
(d) bedrock
(ii) Sand dune is a major feature of ______________ erosion.
(a) water
(b) gully
(c) coastal
(d) wind
(iii) The properties of soil
(a) are similar in all layers.
(b) are different from place to place.
(c) are the same in all environments.
(d) can only be observed with scientific equipment.
(iv) Why is it important to have soil conservation
(a) save the soil
(b) prevent erosion
(c) prevent another dust bowl
(d) all of the above
(v) Soil is mostly conserved by _______.
(a) afforestation
(b) deforestation
(c) making dams
(d) overgrazing
(vi) A wall or fence of earth or stone built to prevent a river flooding an area is known as
(a) barrier
(b) step farming
(c) Dam
(d) Embankment
(vii) Human activities that increase soil erosion include
(a) mining
(b) overgrazing by cattle
(c) afforestation
(d) Both mining and overgrazing by cattle
(viii) The solid rock that forms Earth's surface is called
(a) sediment.
(b) bedrock.
(c) clay.
(d) sand.
Q3: Answer the following Questions.
(i) Why good humus in the soil, prevent it from wind erosion?
(ii) What is soil erosion? Explain means of preventing it.
(iii) The rivers, sea waves and wind are the natural agents that cause soil erosion. Why has the soil erosion increased?
(iv) Explain a few ways to prevent soil erosion.
(v) What prevents soil erosion?
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FAQs on Soil Erosion And Conservation - 2 Class 5 Worksheet Science
| 1. What is soil erosion and why is it a problem? |  |
Ans.Soil erosion is the process by which the top layer of soil is worn away, often due to wind, water, or human activities like farming. It is a problem because it can lead to loss of fertile land, reduced agricultural productivity, and increased sediment in rivers and streams, which can harm aquatic ecosystems.
| 2. What are some common causes of soil erosion? | |
Ans.Common causes of soil erosion include heavy rainfall, deforestation, overgrazing by animals, improper agricultural practices, and urban development. These factors can disturb the soil structure and make it more susceptible to being washed or blown away.
| 3. How can soil erosion be prevented? | |
Ans.Soil erosion can be prevented through various methods such as planting cover crops, using terracing on slopes, maintaining vegetation, practicing crop rotation, and building barriers like retaining walls. These practices help to hold the soil in place and reduce runoff.
| 4. What is the role of vegetation in preventing soil erosion? | |
Ans.Vegetation plays a crucial role in preventing soil erosion by providing ground cover that shields the soil from rain impact, reducing runoff, and stabilizing the soil with their roots. Healthy plant growth also improves soil structure and increases water retention.
| 5. What are the consequences of soil erosion on the environment? | |
Ans.The consequences of soil erosion on the environment include loss of soil fertility, decreased agricultural yields, increased pollution in waterways due to sediment runoff, and loss of habitat for wildlife. It can also contribute to climate change by releasing stored carbon from the soil.
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Nov 18, 2024 Last updated |
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