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Waethering, erosion and deposition E DE
Transcript of Waethering, erosion and deposition E DE
Weathering, erosion and deposition.
Agents of Deposition are:
Water Chemical Weathering Weathering Weathering is the natural
process that wears down
rocks, shapes them and
changes the size and mass
of the earth's surface. Erosion Erosion is the process that removes
particles of rock by wind, water, ice
and gravity. The amount of water erosion may depend on how much sediment is in the water and how deep the river is . Mechanical weathering Mechanical weathering is the process
of weathering when rock get physically
broken apart. Agents of mechanical
weathering are release of pressure,
freezing and thawing, plant growth,
animal actions and abrasion Shaping Earth's Surface Gullies and Streams Chemical weathering is when a rock or another solid is broken apart by chemical reactions. The agents of chemical weathering are water, oxygen, carbon Dioxide, living organisims and acid rain Water Water weathers
rock by dissolving it. After the rock has been dissolved it mixes uniformly to make a solution. Ethan Di Egidio Oxygen Oxygen weathers
rock by combining
with iron giving
the rock a redish
color Carbon Dioxide Carbon dioxide weathers rock by dissolving into rainwater and in water that sinks through the air pockets in soil. Living organisims Living Organisims like
moles and prairy dogs
that dig in the Earth
and loosen the soil Acid Rain Acid rain weathers
rock when pollution mixes with vapor in
clouds, meaning that the raindrops will be heavier, rapidly weathering Rain falls Some raindrops sink into the ground Some may evaporate or
get absorbed by plants The force of the falling
raindrop loosens up the soil As water moves across the land it carries the particles of soil with it. This running water creates sheet erosion. This below is a Venn diagram comparing streams and gullies Mass Movement Mass movement is an agent of erosion.
Mass movement is when gravity pulls loose soil and other loose materials down a hill. These material pick up the sediment created by weathering. The Process of runoff Runoff is water that moves over Earth’s surface. When runoff flows in a thin layer over the land, it may cause a type of erosion called sheet erosion. SEDIMENT 4 Types of sediment are granite, sand, silt and clay. LARGEST-Granite, Sand, Silt, Clay-smallest Deposition By Water Water will carry sediments on the bottom and on the shore near it, piling it up in a certain place, forming little islands in the middle of a river.
Land feateres formed by water deposition are: Deposition by wind Wind carries particles of sediment in anywhere in its path. The sediment in the wind will stop whenever it finds something in its way, piling onto it.
This is a Venn diagram comparing wind and water erosion: Tributaries A tributary is a stream or river that flows into a bigger stream or River. This is where many main streams get most of their water from. Karst Topography The Karst Topogrphy is a type of landscape where there is a layer of limestone near the surface and groundwater has eroded it, making and underground cave. Loess Deposits A loess deposit is a deposit of sediment that is finer than sand, such as clay and silt. Loess makes fertile soil.