Unit 4B APES Soil and Watershed Review - AP Environmental Science 

Timestamps 0:20 - Rock Cycle » Sedimentary » Metamorphic » Igneous 2:42 - Soil Key Terms » Parent Material - bedrock, can determine nutrient content » Weathering - breaking down of parent material and upper layers of soil » Erosion - movement of soil often by wind and water 4:57 - Physical Properties of Soil » Texture/Particle Size - determines soil type and porosity » Clay - smaller and slower to drain (low porosity) » Silt - middle ground » Sand - largest and fastest to drain (high porosity) 7:00 - Soil Texture Triangle 9:35 - Testing Soils 13:30 - Soil Horizons 16:00 - Watersheds » Runoff, carries nutrients and even toxins too » Environmental Problem: eutrophication from runoff of fertilizer

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Hmm, so that’s why so many pots are made out of clay

Omg the soil triangle helped so mich😊

bestt!!!

hi Yyan Manklin

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