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Soil Erosion Eric Angat Teacher. Terracing and Contour plowing Terracing and contour plowing slows down erosion by slowing runoff. Runoff is water flowing.

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Presentation on theme: "Soil Erosion Eric Angat Teacher. Terracing and Contour plowing Terracing and contour plowing slows down erosion by slowing runoff. Runoff is water flowing."— Presentation transcript:

1 Soil Erosion Eric Angat Teacher

2 Terracing and Contour plowing Terracing and contour plowing slows down erosion by slowing runoff. Runoff is water flowing on a slope. Fast runoff means great erosion Slope has faster runoff. Terracing and contour plowing

3 Grasses and groundcovers break the rain’s force, shielding soil. On slopes you’ll need deep- rooted trees and shrubs. Plants prevent erosion.

4 Asphalt and concrete roads prevent the percolation of water. This leads to more runoff that leads to erosion and flooding on low-lying areas. Accumulation of runoff

5 Cemented pathSpaced tilesGrass lawn Which of the following will permit the greatest percolation and least runoff? Grass lawn

6 Soil Mulch

7 Soil mulch 1.to conserve moisture 2.to improve the fertility and health of the soil 3.to reduce weed growth 4.Prevent soil erosion Soil matting 1.to conserve moisture 2.to reduce weed growth 3.prevent soil erosion

8 Soil Much Prevent soil erosion Makes soil fertile. Prevent weeds from growing.

9 stabilized shoreline Adding rocks, sediments, and plants.

10 Less soil because of massive runoff! (slump) Eroded soil settle. Runoff RUNOFF transports sediments to low-lying areas. Deposition

11 Runoff results to SILTED LAKE. A lake that became so shallow due to the deposition of eroded soil. Eroded soil turned to Silt.

12 Dredging is the removal of materials like rocks and sediments from bodies of water to make them deeper. 6. What is dredging?

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