Lesson 5

Question 1

Soil

Answer 1

A loose mixture of tiny rocks

Question 2

Humus

Answer 2

Decayed organic material

Question 3

Soil profile

Answer 3

Shows all the layers of soil

Question 4

Soil horizon

Answer 4

The properties of the soil

Question 5

Soil texture

Answer 5

Describes the size of soil particles

Question 6

What color can soil be

Answer 6

Black
Brown
Red
Orange
Yellow
Gray
White

Question 7

Pore spaces

Answer 7

The space between soil particles

Question 8

How does soil form

Answer 8

When parent rock is weathered and combines with humus

Question 9

What is the first step in soil formation?

Answer 9

weathering of parent rock

Question 10

1How does weathering of the parent rock create soil?

2do these pieces of the parent rock become part of the soil?

Answer 10

1 the pieces eventually go to the topsoil

2 yes

Question 11

1Who creates humus?
2. What do they do?
3where is humus found?
4. why humus is important?

Answer 11

1 microorganisms like bacteria and fungi ( decomposers)breakdown material (remains of plants and animals)- this adds decayed organic matter (HUMUS) to soil- to support plant like or fertility
3 top layer of soils
4. contain nutrients that plants need to grow

Question 12

How do earthworms and moles or other animals that dig in the soil help the soil?

Answer 12

They increase the rate of whethering

Question 13

What four main factors determine how long the soil formation process will take?

Answer 13

1 rock type
2climate
3 topography
4 plants and animal

Question 14

What is soil profile?

Answer 14

A vertices section of soil that shows all the layers

Question 15

What is soil horizon?

Answer 15

Physical properties in the soil profiles

Question 16

what are the 3 main horizons?

Answer 16

1 a
2 b
3 c

Question 17

1WHat is A Horizon?

2 What does A horizon contain?

Answer 17

1 topsoil

2 humus plant roots most devolved

Question 18

1WHat is B Horizon?

2 What doesB horizon contain?

Answer 18

1 below A

2 not as devolved

Question 19

1WHat is C Horizon?

2 What does C horizon contain?

Answer 19

1 below the B

2 least devolved

Question 20

Which horizon contains the most organic matter? and the least organic matter?
3What does the organic matter do for the soil?

Answer 20

1 A
2 C
3 makes it fertile

Question 21

What are the 5 properties of soil?

Answer 21

1 soil texture
2 chemistry 
3 color
4 pore space
5 fertility

Question 22

What is soil texture?

Answer 22

1 the realities size of soil properties

Question 23

What is soil color?

Answer 23

1 clues to what minerals are in the soil

Question 24

What is soil Chemistry?

Answer 24

1 the pH of the soil

Question 25

What is pore space?

Answer 25

1 amount of space between soil particles

Question 26

What is Soil Fertility?

Answer 26

1 describes how well the soil can support plant life