Chem - Soil

Question 1

What are the different Layers of Horizons In soil ? (4)

Answer 1

1. A
2. B
3. C
4. Bedrock

Question 2

What is weathering ?

Answer 2

the process of breaking down of rocks

Question 3

What is humus ?

Answer 3

Humus is an organic matter formed by the decomposition of dead plant and animals

Question 4

What are the different components of the soil?

6

Answer 4

1. Rock particles
2. Minerals
3. Humus
4. Air
5. Water
6. Living organisms

Question 5

What are the different rock particles ? (4)

Answer 5

1. Clay
2. Silt
3. Sand
4. Gravel

Question 6

What are the three types of soil ?

Answer 6

1. Sandy
2. Clayey
3. Lomy

Question 7

What are the different properties of soil ? (4)

Answer 7

1. Soil contains air
2. Soil contains water
3. Soil can absorb water
4. Soil allows water to percolate

Question 8

What is soil erosion ?

Answer 8

Soil erosion is where the top fertile soil is removed by wind or water .

Question 9

What is the property of Sandy soil ?

Answer 9

. Soil contains mainly sand

. Contains very little` humus

Question 10

What are the properties of Clayey ?

Answer 10

. Clayey soil contains only clayey soil

. Contains very little humus

Question 11

What are the properties of Lomy soil ?

Answer 11

. It is a mixture of sandy, clayey and lomy soil together .

. Humus is in the right proportion

Question 12

How do plant’s get air ?

Answer 12

They get air from the air spaces from the soil

Question 13

A vertical selection through different layer of soil is called what ?

Answer 13

It is called soil profile

Question 14

What are some ways you can prevent soil erosion ?

Answer 14

1. Afforestation
2. Stop cutting trees
3. plant more greens

Question 15

How do trees and other plants prevent soil erosion ?

Answer 15

By holding the ground in place or it holds the top soil