Soil Formation
How is soil formed?
Soil is formed as rock is broken down by weathering and mixes with other materials on the surface.
What is Weathering?
Weathering is the breaking down of rock and other substances at Earth’s surface.
What is Uniformitarianism?
Uniformitarianism are the processes that happened in the past, are happening now and will happen in the future.
What is the name of the decayed organic material in soil?
The decayed organic material in soil is called Humus.
What are the two types of Weathering?
The two types of Weathering are Chemical and Mechanical Weathering
What is Oxidation?
Oxidation is the rusting element exposed to oxygen change chemically.
What is Loam?
Loam is soil that is made up of about equal parts of clay, sand, and silt.
What is the difference between chemical and mechanical weathering?
The difference between chemical weathering and mechanical is that mechanical weathering happens physically or mechanically and chemical weathering happens chemically.
What is abrasion?
Abrasion is the grinding away of rock by rock particles carried by water, wind, ice, and gravity.
What is soil made of?
What is soil made of?
Soil is made of rock particles, decayed organic material, minerals, water, and air.
Is the following sentence true or false? Water weathers rock by gradually dissolving it.
True.
Name one type of mechanical weathering.
Possible answers: Animal Action/ Freezing and Thawing/ Plant Growth/ Release of pressure/ Abrasion.
Is the following sentence true or false? Animals contribute most of the organic remains that form humus.
False. Plants are the ones who who contribute most of the organic remains that form humus.
How do plants dissolve rock?
As the plants roots grow, they produce weak acids that slowly dissolve rocks around the roots.
Name three types of Chemical Weathering.
Possible answers: Acid Rain/ Water/ Oxygen/ Carbon Dioxide/ Living Organisms.