Chapter 13 Vocabulary Practice Terms
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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| chemical weathering | process that involve the chemical alteration of rock in such a manner that it is more likely to fragment or to be dissolved
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| contour farming | a method of tilling and planting at right angles to the slope, which reduces soil erosion by runoff
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| crust | the outer, solid surface of the earth
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| erosion | the processes that losen and move particles from one place to another
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| friability | the ability of a soil to crumble
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| horizon | a horizontal layer in the soil. the top layer (A horizon) has organic material. the lowyer layer (B horizon) receives nutrients by leaching. the C horizon is partially weathered parent material
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| humus | soil organic material
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| land | the surface of the earth not covered by water
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| leaching | the movement of minerals from the A horizon to the B horizon by the downward movement of soil water
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| loam | a soil type with good drainage and good texture that is ideal for growing crops
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| mantle | the layer of the earth between the crust and the core
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| mechanical weathering | physical forces that reduce the size of rock particles without changing the chemical nature of the rock
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| parent material | material that is weathered to become the mineral part of the soil
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| plate tectonics | the concept that the outer surface of the earth consits of large plates that are slowly moving over the surface of a plastic layer
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| soil | a mixture of mineral material, organic matter, air, water, and living organisms; capable of supproting plant growth
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| soil profile | the series of layers (horizons) seen as one digs into the soil
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| soil structure | refers to the way that soil particles clump together. sand has little structure because the particles do not stick one to another
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| soil texture | refers to the size of the particles that make up the soil. sandly soil has large particles, and clay has small particles
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| strip farming | the planting of crops in strips that alternate with other crops. the primary purpose is to reduce erosion
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| terrace | a level area constructed on steep slopes to allow agriculture without extensive erosion
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| waterways | low areas that water normally flows through
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| weathering | the physical and chemical breakdown of materials; involved in the breakdown of parent material in the soil formation
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| windbreak | the planting of trees or strips or grasses at right angles to the prevailing wing to reduce erosion of soil by wind
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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.
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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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