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Earth Science
Week 2
Term | Definition |
---|---|
Soil | The upper layer of Earth consisting of a mixture of organic remains, rocks and clay particles. |
Gravel | Smaller stones, pebbles of rock, no water stays, no nutrients. |
Organic | Acquired from living matter. |
Properties of soil | All soil contain mineral particles, sand, silt, shells and clay particles. Also has organic. |
Particles | Very small in size, tiny, a speck, crumb. |
Retain | To keep in or hold back. |
Sediment | particles of matter could be sand, silt, shell and other substances that are carried then deposited |
sand | tiny particles of broken down rock, about the size of salt, very little water stays, loses water, no nutrients. |
Clay | A sticky when wet, fine grained soil that does not allow water to flow through easily, hold to much water, needs nutrients, compacts when dried. |
Humus | Dark and chunky soil full of organic matter and plants , sticks and leaves. |
Loam | The best soil of all because it's a mixture of humus, clay and sand. |
silt | like flour, silky smooth, slippery when wet, some water stays and nutrients erode easily. |