7B

Question 1

It is a product of weathering processes and a medium capable of supporting plant
growth

Answer 1

Soil

Question 2

Refers to the proportion of particles that fall into each of the three size rangers, namely
clay, silt, and sand

Answer 2

Soil Texture

Question 3

A semi non-renewable resource since it takes a long time for water and nutrients to
accumulate inside it

Answer 3

soil

Question 4

Partially decayed organic matter in soil, critical to soil fertility

Answer 4

humus

Question 5

Is a diagram which helps identify the type of soil based on its composition

Answer 5

Soil Texture Triangle

Question 6

The mixture of these two soil types makes it ideal for water and air to pass through it due to the big pore spaces.

Answer 6

Sand and Silt

Question 7

4 Main Characteristics of Soil

Answer 7

1. Soil Depth
2. Soil Texture
3. Soil Structure
4. Organic Matter

Question 8

Thickness of a soil from the surface to a root-limiting layer such as bedrock or seasonal water table

Answer 8

Soil Depth

Question 9

The relative amount of sand, silt, and clay in each soil. Affects more specific characteristics like porosity, drainage, and permeability

Answer 9

Soil Texture

Question 10

The shape and size of soil aggregates. Influences the size distribution of pores in
the soil

Answer 10

Soil Structure

Question 11

Amount of organic matter within a soil. Effects more specific characteristics and is affected by soil management

Answer 11

Organic Matter

Question 12

The sequence of soil horizons from the surface down to the underlying bedrock

Answer 12

Soil Profile

Question 13

One of the succession of zones or layers within a soil profile, each with distinct physical, chemical, and biological characteristics

Answer 13

Soil Horizon

Question 14

Soil Horizon enumerate

Answer 14

1. O horizon
2. A horizon
3. E horizon
4. B horizon
5. C horizon
6. R horizon

Question 15

contains the accumulation of organic matter

Answer 15

O horizon

Question 16

typically dark in color because of the humus present

Answer 16

A horizon

Question 17

a pale layer that is sometimes present in forest areas

Answer 17

E horizon

Question 18

is brownish or reddish because of the presence of iron hydroxides that have leached from the surface. Also called the “zone of accumulation”

Answer 18

B horizon

Question 19

is made up of the parent material underneath (bedrock)
in various stages of weathering

Answer 19

C horizon

Question 20

solid unweathered rock

Answer 20

R horizon

Question 21

The capacity of a soil to function within ecosystem and land-use boundaries to sustain biological productivity, maintain environmental quality, and promote plant and animal
health

Answer 21

Soil Quantity

Question 22

Occurs when soil particles are detached, transported, and deposited. Although this may occur naturally, removal of plants and trees from the soil may lead to accelerated erosion

Answer 22

Erosion

Question 23

The extreme degradation of productive land in arid and semi-arid areas. This can create poor quality vegetation

Answer 23

Desertification

Question 24

Occurs acidic cations (hydrogen, aluminum, iron and manganese) are concentrated in the soil. The pH decreases and soil becomes more acidic. This is a natural process in weathering. However, the use of certain fertilizers to provide food, like anhydrous ammonia, causes soil to become more acidic much faster

Answer 24

Acidication

Question 25

Is the buildup of salt on the soil surface. This affects the physical soil quality and hinders the growth of plants

Answer 25

salinazation