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WorksheetsMS Soil Science Test Review
Total questions: 25
Worksheet time: 19mins
What does soil provide to support plant growth?
Light and air
Essential nutrients, water, and a medium for roots
Carbon dioxide and oxygen
Heat and humidity
How do plants use soil?
To produce food
To anchor themselves and access resources
To absorb sunlight
To release oxygen
How does soil support biodiversity?
By providing habitat for large mammals only.
By providing habitat for organisms like bacteria, fungi, insects, and earthworms.
By eliminating all microorganisms.
By supporting only plant life.
In what way does soil help regulate the climate?
By releasing carbon into the atmosphere.
By storing carbon and reducing greenhouse gases.
By increasing greenhouse gases.
By reflecting sunlight.
Why is soil essential for growing crops?
It does not provides water for crops.
It is a source of sunlight.
It provides a source to pull nutrients from.
It is used for building houses.
Which soil management practices can enhance soil fertility?
Overwatering and deforestation
Crop rotation and cover cropping
Pesticide use and burning fields
Urbanization and mining
What is soil formation?
A fast process involving the growth of plants
A slow process involving the breakdown of rocks and the decomposition of organic matter
A rapid process involving the melting of ice
A quick process involving the erosion of soil
What is physical weathering?
Breakdown of rocks through temperature changes, water, ice, and wind.
Alteration of rock minerals through chemical reactions with water, air, and acids.
Breakdown of rocks by living organisms like plants, animals, and microbes.
Formation of rocks through volcanic activity.
Which process involves the alteration of rock minerals through chemical reactions?
Physical weathering
Chemical weathering
Biological weathering
Mechanical weathering
What is biological weathering?
Breakdown of rocks through temperature changes, water, ice, and wind.
Alteration of rock minerals through chemical reactions with water, air, and acids.
Breakdown of rocks by living organisms like plants, animals, and microbes.
Erosion of rocks by wind and water.
What does the decomposition of plant and animal materials add to the soil?
Water
Organic matter
Minerals
Sand
Which horizon is known as the topsoil?
O
A
B
C
What does the 'O' horizon represent in the soil profile?
Topsoil
Subsoil
Organic
Parent material
Which horizon is referred to as the parent material layer?
O
A
B
C
What are the three main types of mineral particles found in soil?
Sand, Gravel, and Clay
Sand, Silt, and Clay
Silt, Gravel, and Clay
Sand, Silt, and Gravel
Which type of soil particle is known for improving drainage?
Silt
Clay
Sand
Gravel
Which soil particle is medium-sized and retains moisture?
Sand
Silt
Clay
Gravel
What is the characteristic of clay particles in soil?
Large particles that improve drainage
Medium-sized particles that retain moisture
Small particles that hold water and nutrients
Large particles that hold nutrients
Which type of soil has good drainage but low nutrient retention?
Sandy Soil
Loamy Soil
Clayey Soil
Silty Soil
What is the characteristic of loamy soil?
High water retention
Balanced mixture; ideal for most crops
Poor drainage
Low nutrient retention
Which soil type is known for high water and nutrient retention but poor drainage?
Sandy Soil
Loamy Soil
Clayey Soil
Peaty Soil
What is the B Horizon also known as?
Topsoil
Subsoil
Parent Material
Bedrock
What is the C Horizon primarily composed of?
Solid rock
Weathered pieces of rock and minerals
Rich organic content
Clay and silt
What is the R Horizon?
A layer of topsoil
A layer of subsoil
A solid rock layer beneath the soil layers
A layer rich in organic material
Which type of soil holds more water?
Sandy soil
Clay soil
Rocky soil
Loamy soil
