Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into...
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Transcript of Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into...
![Page 1: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/1.jpg)
Weathering, Erosion, and Deposition
![Page 2: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/2.jpg)
Weathering
Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials
![Page 3: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/3.jpg)
Types of Weathering
1. Mechanical: breaks down rock by physical means without changing its chemical composition• Caused by water, wind, ice, living organisms
2. Chemical: breaks down rock through chemical reactions• Oxygen, water, salts, and other substances can
react with the substances in rock and break, dissolve, or wash away the rock
![Page 4: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/4.jpg)
Erosion
Erosion: the movement of weathered rock from one place to another
• Gradually occurs over long periods of time by…– ocean waves, rivers, streams, flooding, tsunamis,
glaciers, wind, gravity (landslides/mass wasting)
• Is considered a destructive process that breaks down Earth’s landforms
![Page 5: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/5.jpg)
Look at the following pictures and name what type of erosion is
occurring
![Page 6: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/6.jpg)
Baffin Island, Nunavut, Canada
![Page 7: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/7.jpg)
• Waterfall (moving water)
![Page 8: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/8.jpg)
Outer Banks, North Carolina
![Page 9: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/9.jpg)
• Waves driven by ocean winds can cause the sandbars here to shift and change
![Page 10: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/10.jpg)
Nevada's Great Basin National Park
![Page 11: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/11.jpg)
• Wind
![Page 12: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/12.jpg)
Rock Formation, Grand Canyon
![Page 13: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/13.jpg)
• Winds sweeping through the Grand Canyon have eroded this sandstone outcrop into an anvil shape. Wind shapes these fantastical forms by eroding less dense rock, like sandstone, faster than surrounding rock.
![Page 14: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/14.jpg)
Alaska's Saint Elias Mountains
![Page 15: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/15.jpg)
• Bernard Glacier: Glaciers are slow but highly effective shapers of the land, essentially carrying away anything in their path—from soil and rocks to hills and even the sides of mountains.
![Page 16: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/16.jpg)
Gulf of St-Lawrence, Québec
![Page 17: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/17.jpg)
• Waves crashing against the shoreline
![Page 18: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/18.jpg)
Deposition
Deposition: the dropping, or depositing, of pieces of rock that have been eroded by water, wind, ice, or gravity
• Is considered a constructive process that builds or creates Earth’s landforms
• The deposited pieces are called sediment
![Page 19: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/19.jpg)
Delta Formation
• At the mouth of a river, where the river empties into an ocean or lake, the flowing water slows down and deposits the sediment it is carrying
• The sediment can build up to form a delta: a flat fan/triangle shaped piece of land at the river’s mouth
![Page 20: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/20.jpg)
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Mississippi River Delta
![Page 23: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/23.jpg)
Nile River Delta
![Page 24: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/24.jpg)
Erosion and Deposition
• Both are the result of interactions between Earth’s lithosphere and hydrosphere– Lithosphere: Earth’s rigid outer layer, which is
broken into tectonic plates– Hydrosphere: contains all of Earth’s water
(including liquid water, ice, and water vapor)
• Both are affected by factors like: slope of the land, sediment size, and speed of the water or wind
![Page 25: Weathering, Erosion, and Deposition. Weathering Weathering: rock materials are broken down into smaller pieces such as pebbles, sand, or soil materials.](https://reader035.fdocuments.net/reader035/viewer/2022062217/56649e105503460f94afbfb3/html5/thumbnails/25.jpg)
Video Clip
http://www.youtube.com/watch?v=ChEHQUMEkXw(shoreline erosion)