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WorksheetsSoils
Total questions: 26
Worksheet time: 13mins
Name
Class
Date
1.
What is the layer of soil just below the topsoil?
a)
soil
b)
subsoil
c)
topsoil
d)
terrace farming
2.
Which layer of soil are these roots growing in?
a)
subsoil
b)
topsoil
3.
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
4.
What is the layer of soil that contains humus, leaf litter, and other organic matter?
a)
O - Organic
b)
A - Topsoil
c)
B - Subsoil
d)
R - Bedrock
5.
Which layer is the bottom of the soil profile?
a)
C - Partially Weathered Parent Material
b)
D - Separated rock
c)
R - Bedrock
d)
A - Topsoil
6.
Layers of soil are also known as:
a)
Soil Profiles
b)
Soil Horizons
c)
Soil sheets
d)
Soil cores
7.
In which layer of the soil profile contains the MOST humus?
a)
Layer 1 (A)
b)
Layer 2 (B)
c)
Layer 3 (C)
d)
Layer 4 (R)
8.
In which layer of the soil profile contains a solid layer of rock?
a)
Layer 1 (A)
b)
Layer 2 (B)
c)
Layer 3 (C)
d)
Layer 4 (R)
9.
Which soil layer consists of clay, iron oxides, and other components that came form the zone of leaching?
a)
O horizon
b)
A Horizon
c)
B Horizon
d)
Bedrock
10.
Soil is made of
a)
weathered rocks and minerals
b)
dead plants and animals
c)
air and water
d)
all of the above
11.
An organism, especially a soil bacterium, fungus, or invertebrate, that breaks down organic material is a...
a)
Decomposer
b)
Burrower
c)
Humus source
12.
Which of the following is NOT one of the three layers of soil?
a)
topsoil
b)
undersoil
c)
subsoil
d)
bedrock
13.
Which layer of soil is on the top?
a)
topsoil
b)
subsoil
c)
bedrock
d)
dirt
14.
What layer of soil is in the middle?
a)
topsoil
b)
bedrock
c)
minerals
d)
subsoil
15.
Humus is.....
a)
the dead parts of plants and animals in soil.
b)
A food we eat with pretzels.
c)
The tiny particles inside of soil
d)
The roots that come off of a plant and live in soil.
16.
Ellen grabs a topsoil sample in her hand. She rolls it into a ball. The soil feels gritty and the ball falls apart. What part of the topsoil most likely made the topsoil feel gritty?
a)
clay
b)
sand
c)
silt
d)
humus
17.
Which of the following is the largest particle in soil?
a)
sand
b)
silt
c)
humus
d)
clay
18.
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.
19.
You dig a small hole in the soil and the next day it rains. The hole fills with water, but does not empty even after several days of dry weather. What is the soil mostly made of?
a)
clay
b)
sand
c)
humus
d)
silt
20.
Soil is made of
a)
Weathered rock
b)
decomposed plants and animals
c)
air and water
d)
all of the above
21.
What are the three soil particles that we use to classify soils?
a)
sand, dirt, and soil
b)
clay, sand, and silt
c)
silt, loam, and sandy loam
d)
clay, salt, and pebbles
22.
If a soil particle is big, meaning it has a larger pore space, how will the water flow?
a)
Fast
b)
Slow
23.
Organisms, like bacteria and fungi, that recycle nutrients back to the soil
a)
Eutrification
b)
legumes
c)
Nitrogen Fixing
d)
decomposers
24.
Which type of soil drains the slowest?
a)
silt
b)
clay
c)
sand
d)
loam
25.
What type of soil has all other soils in it?
a)
Sand
b)
Clay
c)
Loam
d)
Silt
26.
Which soil is best to grow plants in?
a)
silt
b)
loam
c)
sand
d)
clay
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