NAME: _______________________________________________________________ PERIOD:________________________
WEATHERING and EROSION RED NOTES
WEATHERING: The process that breaks down __________ and other substances at Earth’s surface.
EROSION: is the _____________of rock particles by natural _____________…wind, water, ice, or gravity. (work
together with weathering to break rocks down)
SEDIMENT: material _________________ by erosion.
DEPOSITION: occurs where the agents of erosion lay down ________________________.
MECHANICAL WEATHERING: rock is physically broken into __________________pieces
Breaks rock into pieces by freezing and thawing, release of pressure, growth of plants, actions of animals, and
abrasion (grinding away of rock by rock particles carried by water, ice, wind, or gravity)
CHEMICAL WEATHERING: process that breaks down rock through ____________________changes.
AGENTS OF CHEMICAL WEATHERING: Water, oxygen, carbon dioxide, living organisms, acid rain.
**produces rock particles that have a different mineral makeup from the rock they came from.
EROSION
Moving _____________________ is the major agent of erosion that has shaped Earth’s land surface.
Runoff: all ______________ water on earths surface. Runoff is caused by ________________________
Rivers through erosion, creates valleys, waterfalls, flood plains, meanders, and oxbow lakes.
Flood Plain: flat __________________ area of land along a river
Meander: looplike _____________ in the course of a river. ERODE the outerbank and deposit sediment on the inner
bank on the bends. Older the river, the more meanders (curves) it has. Young river is straighter.
Oxbow Lake: meander (curve) is cut off.
Greatest Force for Erosion _______________________ Greatest Agent for Erosion___________________________
What creates V Shaped Valleys? __________________ What creates U Shaped Valley?________________________