Soil Erosion and Its Effects

Question 1

The wearing away of soil layers is called __________.

Answer 1

erosion

Question 2

Layers of the soil:

Answer 2

• topsoil
• subsoil
• bedrock

Question 3

This layer is the richest layer of the soil. It contains humus.

Answer 3

topsoil

Question 4

This layer is a mixture of minerals and some humus.

Answer 4

subsoil

Question 5

This layer is composed of solid rocks or parent rock materials.

Answer 5

bedrock

Question 6

Agents of soil erosion:

Answer 6

• air
• water
• people and animals

Question 7

They are large mounds of sand formed when the wind blows sand from one place to another. They are commonly seen in deserts.

Answer 7

Sand dunes

Question 8

A loose material that may contain sand, soil, and mud.

Answer 8

Silt

Question 9

Fan-shaped sand bars that form at the mouth of rivers are called __________.

Answer 9

deltas

Question 10

The clearing and burning of a forest area for planting short-term crops.

Answer 10

Kaingin

Question 11

A yellowish-brown loamy deposit that is very fertile.

Answer 11

Loess

Question 12

They are formed when rivers overflow.

Answer 12

Floodplains

Question 13

Eroded rock particles that are deposited in the shoreline.

Answer 13

Beach

Question 14

A mass of earth and rock that suddenly moves down the slope.

Answer 14

landslide