Weathering, Erosion, and Soil
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What are the agents of mechanical weathering? | abrasion, actions of animals, growth of plants, heating and cooling, freezing and thawing
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| What are the types of chemical weathering? | water, oxygen, carbon dioxide, organism's actions, acid rain
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| What horizon is crumbly, dark, has lots of humus, has decomposers? | Horizon A
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| What Horizon is a reddish brown color, has mostly clay, and very little humus? | Horizon B
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| What horizon is partially weathered rock? | Horizon C
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| What horizon is solid rock? | Bedrock
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| What is weathering? | The breaking up of rocks chemically or physically.
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| What is erosion? | The movement of the broken up rocks to a new location by wind, water, or ice.
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| What is soil? | Soil is broken down rock that is loose material that lays on Earth's surface.
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| What is found on top of all of the soil horizons? | Litter
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| What is the most important type of chemical weathering? | Water
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| What is chemical weathering? | Chemical weathering is when the chemical composition changes in a rock due to chemical reactions
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| What is mechanical/physical weathering? | Breaks up the rock physically not changing the composition. (what the rock is made of or how it looks.
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| What is humus? | Decayed plant or animal remains that make soil more fertile
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| What is soil made up of? | water, air, rocks, minerals, humus
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| Why did the dust bowl happen? | poor farming practices, too many herds, and drought
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| Is soil important to everything on Earth? | Yes
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| What is soil conservation? | the management of soil to prevent it's destruction
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| What is conservation plowing and what does it do? | When dead weeds and stalks are left in place from last years harvest to hold soil in place and help return nutrients and it keeps soil from washing or blowing away
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| What is contour plowing and what does it do? | the practice of plowing fields on a slope and it helps slow runoff and keeps the soil from washing away
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| What does permeable mean? | that a substance has holes in it so things can pass through it
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| Subsoil is another name for what horizon? | Horizon B
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| Topsoil is another name for what horizon? | Horizon A
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| What is a soil horizon? | a layer of soil that's color or texture is different from surrounding layers.
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| What are decomposers? | the organisms that break up the remains of dead organisms into smaller pieces and digest them with chemicals
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| Who taught new methods of soil conservation to farmers in the South? | George Washington Carver
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| What is the dust bowl? | Places like western Oklahoma, eastern new mexico, northern Texas, eastern Colorado, western kansas
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| (True or False) Soil is a valuable resource because life depends on it but it forms very slowly | True
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| (True False) Fungi, bacteria, and Earthworms are a few examples of decomposers. | True
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| What does loam mean? | Soil that has crumbly texture, about equal parts of clay, sand, and silt, and is the best for growing most types of plants
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| What is sod? | Thick mass of grass and roots that makes lawns look nice. It is grown on a farm and helps keep soil in place. After a little bit, the sod grows into the soil but it has to be watered a lot.
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