Share 3.4 Soil
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How is soil formed?
weathering of rocks
What are the main components of soil?
rock particles, organic matter, air, water
What does soil texture describe?
how soil feels
Give two words that can describe soil texture.
sticky crumbly
What does the colour of soil indicate?
amount of organic matter
What type of soil forms from sandstone?
sandy soil
What type of soil forms from shale?
clay soil
What type of soil forms from igneous rocks?
sandy clay soil
Why does sandy soil drain water easily?
large air spaces
Why does sandy soil contain more air?
large particles
Why does clay soil have little air?
small particles packed tightly
Why does clay soil become waterlogged?
water cannot drain
What happens to clay soil in hot weather?
it cracks
What is the particle size of sandy soil?
large
What is the particle size of clay soil?
small
What is the particle size of loam?
mixed
