4E Science-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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| Movement of rock pieces to new places | erosion
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| Cutting wide, flat planting areas into the sides of steep hills or mountains | terracing
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| Farmers control soil loss by ____ around hills instead of up and down the hills. | contour plowing
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| Planting crops between rows of other crops to help hold soil in place | strip cropping
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| Rotting plant and animal materials that are a part of topsoil | humus
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| The process of rocks being broken up by growing plants roots | weathering
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| Soil is made up of these two things | weathered rock and humus
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| Three layers of soil | topsoil, subsoil, and bedrock
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| Clay doesn't absorb much water, so plants in clay soil need a lot of _____. | water
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| Soil that is poor for growing plants can be improved by adding _____. | fertilizer
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| The best soil for growing most plants contains a __________. | mixture of ingredients
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| Soil is a necessary resource because _____. | plants grow in it
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| Topsoil can be carried away by runoff when there is more _____ than the soil can hold. | rain
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| Why is growing the same crop year after year harmful for the soil? | It can use up certain nutrients in the soil.
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| One way farmers conserve soil is by _____, which helps prevent wind erosion. | strip cropping
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
MrsHeatherKing
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