Soil and Its Characteristics Flashcards
(27 cards)
A kind of matter made up of rocks, remains and wastes of organisms, water, gases, and microorganisms.
Soil
What happens if there’s no soil?
Without soil, plants would die. Other organisms such as people and animals would start without soil.
What type of resource is a soil? (renewable or non-renewable)
Renewable resource
Soil is made through a process of __________.
weathering
This refers to the breakdown of rocks into small particles through physical and chemical means.
weathering
The process of laying down of rocks, soil, and organic materials in another location.
Deposition
The breaking down of materials.
Decomposition
Decomposed materials are formed into _______-.
humus
A dark brown material rich in nutrients essential for plant growth.
humus
(3) Characteristics of soil:
- texture
- color
- structure
This refers to the size of particles.
Texture
(4) Textures of soil:
- clay
- silt
- saand
- loam
This soil texture has very small particles. When wet it is very sticky.
Clay
This type of soil is used in making cooking pots, bricks, and baskets.
Clay
This soil has larger particles than clay. It feels smooth and is good for growing vegetables and other garden plants.
Silt
The particles of this soil are large enough to see. They are coarse and easily allow water to drain from them.
Sand
Sandy soil is made of different materials such as _______ and ________.
quartz and feldspar
This soil is the most ideal for all kinds of planting purposes.
Loam
What soil characteristic tells something about the soil composition?
Soil color
This refers to the ability of the soil to supply plants with adequate amounts of essential nutrients derived from minerals and organic matter.
Soil fertility
Soil color that indicates soil fertility.
Dark soil
Soil color is associated with the acid content in soil. This soil is often low in fertility.
Red soil
Why does soil often red in color?
due to the IRON present in the soil
(color) Soil that has low organic content. It may contain ferrous hydroxide.
Gray soil