5 Written Questions
5 Matching Questions
- a The solid layer of rock beneath the soil
- b the grinding away of rock by other rock particles carried in water, ice, or wind
- c Soil organism that breaks down the remains of organisms and digests them.
- d characteristic of a material that is full of tiny, connected air spaces that water can seep through
- e a chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust
5 Multiple Choice Questions
- wedges of ice in rocks widen and deepen cracks
- A measure of how well soil supports plant growth.
- earth materials deposited by erosion
- any one of several processes by which gravity moves sediment downhill
- The layer of soil beneath the topsoil that contains mostly clay and other minerals.
5 True/False Questions
soil → Rich, fertile soil that is made up of about equal parts of clay, sand, and silt.
weathering → the loose layer of dead plant leaves and stems on the surface of the soil
erosion → The removal of rock particles by wind, water, ice, or gravity
deposition → process in which sediment is laid down in new locations
topsoil → Mixture of humus, clay, and other minerals that forms the crumbly, topmost layer of soil.