Soil

Question 0

What soil forms from

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Answer 0

Mechanical and chemical processes

Question 1

What soil consists of

Answer 1

Regolith,

Humus,

Water, and

Living Organisms

Question 2

Minerals and weathered rock fragments

Answer 2

Regolith

Question 3

Weathered rock particles and decaying organic matter

Answer 3

Humus

Question 4

Soil varies in composition, texture, structure,

and color at different depths.

Answer 4

Soil profile

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Question 5

The 3 soil horizons

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Answer 5

O/A, B, C

Question 6

O/ A

Answer 6

Topsoil

Question 7

B

Answer 7

Subsoil

Question 8

C

Answer 8

Bedrock

Question 9

Topsoil (O/A)

Answer 9

Organic material, loose leaves, lots of insects/ microorganisms

Question 10

Subsoil (B)

Answer 10

Fine clay and lower limit of plant roots

Question 11

Bedrock (C)

Answer 11

Parent material. Contains little organic matter.

Question 12

Factors of soil formation

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Answer 12

Climate. Typography. Parent material. Biological organisms, and Time.

Question 13

Most significant factor of soil formation. Temp, wind, and amount of rain determine composition of the soil.

Answer 13

Climate

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Question 14

Slope of ground and orientation towards the sun

Answer 14

Topography

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Question 15

Material that has been transported by erosion will have different characteristics than the original soil

Answer 15

Parent material

Question 16

Microorganisms, fungi, bacteria contribute different organic materials to the soil

Answer 16

Biological organisms

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Question 17

Newer soils are found along rivers where erosion has taken place and minerals are present. Older soils have had most minerals changed/washed away

Answer 17

Time

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Question 18

Types of soil

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Answer 18

Pedalfer. Pedocal. Laterites.

Question 19

Soils that are rich in Aluminum and Iron

Answer 19

Pedalfer

Question 20

These soils form in forested, humid climates like the southern U.S. They have a lot of clay in them and are red- brown in color.

Answer 20

Pedalfer

Question 21

These soils are rich in calcium and form in dry, arid climates (like southwestern U.S. Ground is covered in grasses and brush vegetation. Light- grey- brown color

Answer 21

Pedocal

Question 22

Soils that have been depleted of almost all elements except for iron and aluminum oxides. They form in hot, tropical areas, where lots of rain filters minerals, giving it a color of orange or red.

Answer 22

Laterites

Question 23

High rainfall has caused leaching on most of the elements and nutrients from the soil.

Answer 23

Laterites

Question 24

This is the soil of a tropical rainforest.

Answer 24

Laterites

Question 25

When dried, it become very hard and practically waterproof. Ancient structures were built from these soils.

Answer 25

Laterites