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Soil
| Question | Answer |
|---|---|
| Which horizon would you find weathered rock and minerals? | Horizon C |
| Which horizon would you find solid rock? | Horizon R |
| Define erosion | movement of sediment by wind, rain, and ice |
| Define weathering | wearing away of rocks, minerals, and soil |
| The rate of weathering is due to ___________ and climate | rock type or parent rock |
| Soil formation begins with the weathering of _____ | bedrock |
| Soil that is really fertile has a lot of ____________. | humus |
| How long did it take for the thick, fertile soil to develop: _____ of years (CHOICES: several, dozens, hundreds, thousands) | thousands |
| Plowing lands was one of the factors that created the _____________ Bowl. | dust |
| A soil or rock that has many air spaces and allows water/air to pass through it is said to be _______________. | permeable |
| Which horizon would you find loam that is rich in humus? | Horizon A |
| Which horizon would you find clay, minerals, longer plant roots but little humus. | Horizon B |
| What is another name for soil horizon B? | Subsoil |
| What is another name for soil horizon A? | topsoil |
| What is another name for soil horizon R? | bedrock |
| what type of soil would have 10% sand, 80% clay and 10% silt? | clay |
| What type of soil would have 50% sand, 10% clay and 40% silt? | Loam |
| What 3 things determine the type of soil we have in Ohio? | Climate, bedrock, and plant organisms |
| Describe the difference between sand, silt, and clay in terms of their size. | sand is large particles; silt is small size particle; clay is extremely small particle. |
| How does the particle type (clay, sand, silt, gravel) impact water moving through the soil? | clay doesn't let much water through, silt is medium amount of water through, sand lets water through easily, gravel really lets water through. |
| Describe 6 different ways that farmers are conserving soil. | contour plowing, crop rotation, conservation plowing, terracing, strip cropping, wind breaks |
| What is contour plowing? | plowing with the curves of the land |
| What is crop rotation? | Planting different crops on the land in rotation (corn one year and soybeans the next) |
| What is each layer of soil called? | horizons |
| What is terracing? | Using stone to block erosion down a hill. (shelves) |
| What is Topsoil mostly made of, and what is the thing in Topsoil mostly made of? | Humus, and humus is made of the remains from dead plants or trees,(twigs, leaves, roots, etc) |
| What are decomposers? | Decomposers are animals such as worms that take the remains of dead organisms and break them down helping them become humus |
| How can soil Erosion effect the world? | It can blow it all away with wind erosion if its not planted right and create the Dust Bowl |
| What is the Dust Bowl? | A dust storm that killed many people because there was a drought and the soil wasn't being farmed right |
| How long did the Dust Bowl last? | 10 years |
| The best soil for growing is called ______________? | Loam (perfect mixture of sand, silt, clay, and humus) |
| What is the A horizon? | A dark brown, crumbly soil that's a mixture of humus, clay minerals and rocks. |
| What is the B horizon? | Reddish-brown soil that is mostly made up of clay and other particles and doesn't have lots of humus. |
Created by:
meginnij
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