Soil Science

Question 1

True or False: Most plant life is not dependent on soil.

Answer 1

False

Question 2

T or F: Without soils there would be no land animals as they would have no food to eat.

Answer 2

True

Question 3

T or F: The Food Chain begins with the soil

Answer 3

True

Question 4

Another word for organic material is

Answer 4

Humus

Question 5

Substances that have the chemical and physical properties to be formed into rock.

Answer 5

Minerals

Question 6

The most productive soil in the world, found in the Midwest, that contain a lot of humus is called…

Answer 6

Organic Soil

Question 7

T or F: Water is a major way soil is moved from one location and deposited in another.

Answer 7

True

Question 8

We call soil that has been moved and deposited by water ___________.

Answer 8

Alluvial Soil.

Question 9

Soils formed from wind wearing away at rock and then deposited by wind are called ____________.

Answer 9

Eolian Soil.

Question 10

Silt and clay that have been deposited by wind in areas such as the Midwest are called _______________.

Answer 10

Loess Soil.

Question 11

Found in Hawaii and Washington State, soils made from ash that are generally very productive are called ____.

Answer 11

Volcanic Soil.

Question 12

The size of the individual soil particles that make up a specific soil is called

Answer 12

Texture.

Question 13

Which soil particle holds the most water the longest?

Answer 13

Clay.

Question 14

The most common soil microorganism

Answer 14

Bacteria

Question 15

Organisms of different types that live together for mutual benefit live in this type of relationship.

Answer 15

Symbiotic

Question 16

When an entire plant dies and microorganisms help return the nutrient material the plant took from the soil back to the soil through decomposition, this is known as the

Answer 16

Carbon Cycle

Question 17

The A Horizon is also known as

Answer 17

Topsoil

Question 18

The area of the soil that contain the roots of plants is referred to as the

Answer 18

Rhizosphere

Question 19

If a soil is too alkaline, you must add…

Answer 19

Acid Materials, or Sulfur-Based Materials

Question 20

The wearing away of the soil by water or wind.

Answer 20

Erosion