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Ken_Soil

Total questions: 30

Worksheet time: 2hrs 3mins

Name
Class
Date
1.
What term describes the loss of clay, iron, and other materials from topsoil over time due to leaching?
a)
aviation
b)
eluviation
c)
illuviation
d)
ullinviation
2.

Which layer is the parent material?

a)

Horizon O

b)

Horizon A

c)

Horizon B

d)

Horizon C

e)

Horizon R

3.
Layers of soil are also known as:
a)
Soil Profiles
b)
Soil Horizons
c)
Soil sheets
d)
Soil cores
4.

The light colored, leached horizon.

a)

A Horizon

b)

O Horizon

c)

Bedrock

d)

E Horizon

5.

Which layer of soil has low organic material and has clay in the form of aluminum and iron compounds?

a)

Topsoil

b)

Bedrock

c)

Subsoil

6.

Which layer of soil contains lots of roots and minerals for growing plants?

a)

Topsoil

b)

Subsoil

c)

Bedrock

7.

Which soil horizon is contains decomposed plants and animals?

a)

A Horizon

b)

B Horizon

c)

C Horizon

d)

O Horizon

8.
The layer of soil which the topsoil is found.
a)
Horizon A
b)
Horizon B
c)
Horizon C
d)
Horizon D or R
9.

identify the soil profile

a)

A HORIZON

b)

O HORIZON

c)

C HORIZON

d)

R HORIZON

e)

B HORIZON

10.

The proceess soil formation is called ___________________ .

a)

weathering

b)

eluviation

11.
When plants, animals, and other organisms die, they break down and become part of the soil. What is this part of the soil called?
a)
sand
b)
silt
c)
clay
d)
humus
12.
Which of the following is the correct order of soil particles in order of increasing particle size?
a)
clay-sand-silt
b)
sand-clay-silt
c)
silt-clay-sand
d)
clay-silt-sand
13.

Which soil horizon is contains decomposed plants and animals?

a)

A Horizon

b)

B Horizon

c)

C Horizon

d)

O Horizon

14.
The layer of soil which the topsoil is found.
a)
Horizon A
b)
Horizon B
c)
Horizon C
d)
Horizon D or R
15.
An organism, especially a soil bacterium, fungus, or invertebrate, that breaks down organic material is a...
a)
Decomposer
b)
Burrower
c)
Humus source
16.
Soil is made of
a)
weathered rocks and minerals
b)
dead plants and animals
c)
air and water
d)
all of the above
17.
What kind of weathering causes the mineral composition of rock to change?
a)
mechanical weathering
b)
permeable weathering
c)
chemical weathering
d)
general weathering
18.

Which of the following is not a property of clayey soil

a)

particles bind to each other closely

b)

high amounts of water

c)

Easy to handle

d)

Very fine in texture

19.

Identify the mineral matter with highest porosity

a)

Clay

b)

Sand

c)

Silt

20.

Which of the following will not be involved in humus formation

a)

Clay

b)

Dead leaves

c)

animal waste

d)

micro-organisms

21.

Identify something that is not a soil component

a)

Oxygen

b)

water

c)

Minerals

d)

Earthworms

e)

acids

22.

When wind, water, or gravity transports soil and sediment from one place to another.

a)

Soil Conservation

b)

Desertification

c)

Erosion

d)

Salinization

23.

When an area can become desert like due to plants being unable to grow in infertile soil.

a)

Soil Conservation

b)

Desertification

c)

Erosion

d)

Salinization

24.
The texture of soil depends mainly on
a)
the types of plants that grow in the soil.
b)
the size of the particles in the soil.
c)
the color of the soil.
d)
the number of worms in the soil.
25.
Which layer of soil are these roots growing in?
a)
subsoil
b)
topsoil
26.

Which soil component makes up about 25% of an ideal loamy soil?

a)

Water

b)

Organic Matter

c)

Air

d)

Water & Air

27.

Which soil component makes up about 45% of an ideal loamy soil?

a)

Water

b)

Organic Matter

c)

Air

d)

Minerals

28.

Which soil component makes up about 5% of an ideal loamy soil?

a)

Water

b)

Organic Matter

c)

Air

d)

Minerals

29.
The very top layer of soil is mostly made of
a)
Solid rock 
b)
Clay and mineral deposits
c)
A mixture of minerals and organic material
d)
Mostly organic material (humus)
30.
What do we call the layers of soil?
a)
Deposits
b)
Horizons
c)
Minerals
d)
Rocks

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