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earth science home t
test test test evwdsfbgnehtwgvbgenhtwgvsfgenthwgwhwght5wrfheerrrrrgfdhetbaetnaet
| Question | Answer |
|---|---|
| what's the difference between weathering erosion and deposition. | w-breaking up rocks e-moving rocks d-dropping the rocks somewhere else. |
| what are the types of weathering | physical chemical and biological |
| physical weathering | Physical weathering is a process that causes the destruction of rocks, mineral, and soils no chemicals, primary process abrasion |
| chemical weathering | the erosion or disintegration of rocks caused by chemical reactions chiefly with water and substances dissolved in it |
| biological weathering | when plants break up rocks with roots or root exudates. The process is slow, but may strongly influence landscape |
| four thing that make soil | minerals, dead and living organisms, air, and water. |
| soil layers | organic, top soil, e layer, subsoil, parent material, bedrock |
| organic | organic matter such as decomposing leaves. |
| top soil | Mostly minerals from parent material with organic matter incorporated |
| e layer | clay, minerals, and organic matter, leaving a concentration of sand and silt particles of quartz |
| sub soil | Rich in minerals that leached from the A or E horizons and accumulated here. |
| parent material | he deposit at Earth’s surface from which the soil developed |
| bedrock | A mass of rock such as granite, basalt, quartzite, limestone or sandstone that forms the parent material for some soils |
| how do living things help keep our soil clean | Living roots reduce soil erosion and provide food for organisms like earthworms and microbes that cycle the nutrients you plants need. |
| four types of soil | sand silt loam clay |
| sand properties | the largest type of soil particles, where each particle is visible to naked eye. doesn't keep water well |
| silt properties | intermediate size between sand and clay. keeps water well |
| loam properties | mixture of clay, sand and silt and benefits from it, favouring water retention, air circulation, drainage and fertility |
| clay properties | the finest of all the soil particles, plasticity when wet, very hard when dryed |
| how water erode | when rain or snowmelt displaces the soil on the ground |
| how air erode | a light wind that rolls soil particles along the surface through to a strong wind that lifts a large volume of soil particles into the air to create dust storms |
| how glaciers erode | abrasion and plucking |
| how avalanches erode | The sliding induces surface or subsurface cracks which eventually result in the break-up of the surface. |
Created by:
Eliza_yes
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