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Soil (Erosion, Pollution, Conservation)

Soil (Erosion, Pollution, Conservation)

Assessment

Presentation

Science

7th Grade

Easy

Created by

Adarsh.S.Kumar .

Used 3+ times

FREE Resource

16 Slides • 4 Questions

1

Soil (Erosion, Pollution, Conservation)

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2

Agenda

  • Erosion:

  • Explanation, Causes

  • Pollution:

  • Explanation, Causes

  • Conservation:

  • Explanation,

  • Prevention methods

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3

Erosion

Explanation

4

Erosion

Gradual removal of the topsoil by the process of flowing water, wind, waves and snow is called Soil erosion.

5

Erosion

Causes

6

Erosion

  • Heavy Rains and floods make the soil particles loose and lead to soil erosion

  • Deforestation loosens the particles in soil and leads to easy erosion by wind and water

  • Poor farming methods adopted by farmers also add up to soil erosion

  • Overgrazing by animals, construction of roads and houses have led to increase in the pace of soil erosion

7

Pollution

Explanation

8

Pollution

Contamination of soil by presence of man-made chemicals or other non-desirable substances is called Soil pollution

9

Pollution

Causes

10

Pollution

  • Excessive use of pesticide, insecticide, and fertilizers are the major cause of soil pollution

  • Excretory products of living organisms and untreated sewage also pollute the soil

  • Plastic waste does not decay and pollutes the soil

  • Salination degrades the quality of soil

11

Conservation

Explanation

12

Conservation

Protection of soil against Erosion and degradation

13

Conservation

Prevention methods

14

Conservation

  • Contour ploughing

  • Terrace farming

  • Perimeter runoff control

  • Windbreaks

  • Cover crops/crop rotation

15

Open Ended

What is Soil erosion?

16

Open Ended

What is Soil pollution?

17

Open Ended

What is Soil conservation?

18

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19

Open Ended

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20

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Soil (Erosion, Pollution, Conservation)

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