WorksheetsUnderstanding Soil Composition
Total questions: 10
Worksheet time: 6mins
Name
Class
Date
1.
What are the primary components of soil?
a)
Water, air, and sunlight
b)
Sand, clay, and silt only
c)
The primary components of soil are mineral particles, organic matter, water, and air.
d)
Organic matter and nutrients only
2.
This term indicates the relative content of particles of various sizes, such as sand, silt and clay in the soil.
a)
texture
b)
type
c)
pH
d)
nutrient content
3.
What do the letters pH stand for?
a)
Potassium Hydrate
b)
Potential Hydrogen
c)
Potassium and Holding
d)
Acidic solution
4.
In order to increase water retention, you should add the following to soil:
a)
organic matter
b)
loose gravel
c)
nitrogen pellets
d)
coarse sand
5.
Soil formation begins with the weathering of_______.
a)
Humas
b)
Subsoil
c)
Litter
d)
Rock
6.
The layer of soil which the topsoil is found.
a)
Horizon A
b)
Horizon B
c)
Horizon C
d)
Horizon D or R
7.
The MAIN thing Decomposers do for the the soil is the following:
a)
Store moisture
b)
Burrow deep in the soil
c)
Make space for air and water
d)
Break down and digest dead organisms
8.
Decayed organic material in soil is called______.
a)
Litter
b)
Silt
c)
Humus
d)
Clay
9.
The two main factors that determine the rate of weathering are the TYPE of rock and_____.
a)
Music
b)
Climate
c)
Size of rock
d)
Weight of rock
10.
Which horizon is made up of partially weathered rocks?
a)
Horizon A
b)
Horizon B
c)
Horizon C
d)
Horizon D or R
100 %
