10 Questions
What is the primary process responsible for the formation of soil?
Weathering
What are the main components of soil?
Parent rock, organic material, air, and water
Which type of soil is produced when the parent material is sandstone?
Sandy soil
Which form of weathering involves the breakdown of rocks by external or internal forces?
Mechanical weathering
What happens to water in cracks in rocks during freeze-thaw weathering?
It expands
What is the main cause of weathering in the Caribbean according to the text?
Colliding rocks from moving water in rivers or waves
What is the abrasive agent that causes the wearing away of rock surfaces in very dry regions?
Sand particles carried by wind
Which process leads to onion-skin weathering described in the text?
Repeated expansion and contraction due to high temperatures
What happens to the outer layers of rocks as a result of onion-skin weathering?
They shatter and break off in pieces
How does the temperature change impact rock surfaces according to the text?
Results in rock cooling and contracting at night
Test your knowledge on the composition and formation of soil, which is a mixture of parent rock, organic material, air, and water. Learn about how soil provides an environment for plant growth and soil organisms, and how it can vary in composition, type, and thickness at different locations.
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