LECTURE 12 — SET A (PRECIPITATION + RUNOFF BASICS)
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8 Terms
What is precipitation?
Water released from the atmosphere as rain, snow, sleet, or hail
What is storm runoff?
Water that flows over land when precipitation exceeds infiltration
What is infiltration?
The process of water soaking into the ground
What factors decrease infiltration?
Impermeable surfaces, saturated soil, and steep slopes
What factors increase runoff?
Heavy rainfall, low infiltration, and steep terrain
How does slope affect runoff?
Steeper slopes increase runoff speed and reduce absorption
Why is runoff important?
It transports water, sediment, and nutrients across Earth’s surface
What is permeability?
The ability of soil or rock to allow water to pass through
