Earth's Surface
Folds & Faults
Uplift -- lifting of earth's crust, causing rocks to be exposed to weathering.
Weathering -- Anything that wears rock down & breaks it into smaller pieces. Examples: Wind, rain, sun, lichens
Erosion -- moving rock around from one place to another. Examples: water & wind
2 ways to stop erosion are : planting plants & building retaining walls.
Deposition -- Small pieces of rock are dropped by wind or water.
Cementation -- When dissolved minerals become a paste in the cracks of the sediment. It hardens over time to make a sedimentary rock.
Could erosion & deposition happen without gravity??? No. Rock particles would not be moved downhill. They would not be deposited. In fact, there would be no running water at all!
A few events that could change earth's surface SLOWLY: Processes that change it QUICKLY:
erosion mud slides
weathering earthquakes
volcanoes