compare and contrast mechanical and chemical weathering. explain how weathering affects earth’s...
TRANSCRIPT
![Page 1: Compare and contrast mechanical and chemical weathering. Explain how weathering affects Earth’s surface](https://reader036.vdocument.in/reader036/viewer/2022062300/56649e245503460f94b134c9/html5/thumbnails/1.jpg)
Compare and contrast mechanical and chemical
weathering.Explain how weathering affects
Earth’s surface.
![Page 2: Compare and contrast mechanical and chemical weathering. Explain how weathering affects Earth’s surface](https://reader036.vdocument.in/reader036/viewer/2022062300/56649e245503460f94b134c9/html5/thumbnails/2.jpg)
Define
weathering surface
processes that break down rock into small pieces called sediment
![Page 3: Compare and contrast mechanical and chemical weathering. Explain how weathering affects Earth’s surface](https://reader036.vdocument.in/reader036/viewer/2022062300/56649e245503460f94b134c9/html5/thumbnails/3.jpg)
Explain why over long periods of time, weathering wears mountains down to rolling hills…
Rocks at the tops of mountains are broken down by
weathering, and sediment is moved downhill by gravity,
water, and ice.
![Page 4: Compare and contrast mechanical and chemical weathering. Explain how weathering affects Earth’s surface](https://reader036.vdocument.in/reader036/viewer/2022062300/56649e245503460f94b134c9/html5/thumbnails/4.jpg)
Describe mechanical weathering
Physical processes that break rock into fragments with the same chemical makeup and characteristics as the original rock
![Page 5: Compare and contrast mechanical and chemical weathering. Explain how weathering affects Earth’s surface](https://reader036.vdocument.in/reader036/viewer/2022062300/56649e245503460f94b134c9/html5/thumbnails/5.jpg)
Identify what can cause mechanical weathering
growing plants burrowing animals expanding ice
![Page 6: Compare and contrast mechanical and chemical weathering. Explain how weathering affects Earth’s surface](https://reader036.vdocument.in/reader036/viewer/2022062300/56649e245503460f94b134c9/html5/thumbnails/6.jpg)
Speculate how damage to a sidewalk, due to growing plants, could be avoided…
Plant trees farther away from the sidewalk. Remove large
roots. Build sidewalks farther away from mature trees.
![Page 7: Compare and contrast mechanical and chemical weathering. Explain how weathering affects Earth’s surface](https://reader036.vdocument.in/reader036/viewer/2022062300/56649e245503460f94b134c9/html5/thumbnails/7.jpg)
Identify what happens in
ice wedging.
water enters cracks in rock
water freezes and expands
expanding ice breaks rocks apart
![Page 8: Compare and contrast mechanical and chemical weathering. Explain how weathering affects Earth’s surface](https://reader036.vdocument.in/reader036/viewer/2022062300/56649e245503460f94b134c9/html5/thumbnails/8.jpg)
Explain why size is important to weathering rock.
Surface area-•Small pieces of rock have more surface area than do larger pieces, which makes them weather faster.
Picture CONT
![Page 9: Compare and contrast mechanical and chemical weathering. Explain how weathering affects Earth’s surface](https://reader036.vdocument.in/reader036/viewer/2022062300/56649e245503460f94b134c9/html5/thumbnails/9.jpg)
Explain why size is important to weathering rock.
![Page 10: Compare and contrast mechanical and chemical weathering. Explain how weathering affects Earth’s surface](https://reader036.vdocument.in/reader036/viewer/2022062300/56649e245503460f94b134c9/html5/thumbnails/10.jpg)
Describe chemical weathering
Chemical reactions dissolve the minerals in rocks or change them into different minerals.
![Page 11: Compare and contrast mechanical and chemical weathering. Explain how weathering affects Earth’s surface](https://reader036.vdocument.in/reader036/viewer/2022062300/56649e245503460f94b134c9/html5/thumbnails/11.jpg)
Explain how carbonic acid weathers rock.
Carbonic acid, formed from water reacting with carbon dioxide, causes calcite in limestone to dissolve (which could form caves).
![Page 12: Compare and contrast mechanical and chemical weathering. Explain how weathering affects Earth’s surface](https://reader036.vdocument.in/reader036/viewer/2022062300/56649e245503460f94b134c9/html5/thumbnails/12.jpg)
Explain how kaolinite clay forms.
It forms when natural acids react with feldspar in granite and other rocks. Clay is an end product of weathering.
![Page 13: Compare and contrast mechanical and chemical weathering. Explain how weathering affects Earth’s surface](https://reader036.vdocument.in/reader036/viewer/2022062300/56649e245503460f94b134c9/html5/thumbnails/13.jpg)
Explain why groundwater is acidic.
As water seeps through soil, it reacts with carbon dioxide in soil and air to form carbonic acid.
![Page 14: Compare and contrast mechanical and chemical weathering. Explain how weathering affects Earth’s surface](https://reader036.vdocument.in/reader036/viewer/2022062300/56649e245503460f94b134c9/html5/thumbnails/14.jpg)
Define
oxidation Chemical
process that occurs when iron is exposed to oxygen in the air
![Page 15: Compare and contrast mechanical and chemical weathering. Explain how weathering affects Earth’s surface](https://reader036.vdocument.in/reader036/viewer/2022062300/56649e245503460f94b134c9/html5/thumbnails/15.jpg)
Define climate•Cold climate
•Warm, wet climate
Pattern of weather that occurs over time•Mechanical weathering more rapid in cold climates
•Chemical weathering more rapid in warm, wet climates
![Page 16: Compare and contrast mechanical and chemical weathering. Explain how weathering affects Earth’s surface](https://reader036.vdocument.in/reader036/viewer/2022062300/56649e245503460f94b134c9/html5/thumbnails/16.jpg)
Photo creditshttp://www.treknature.com/gallery/Asia/Cambodia/photo111875.htmhttp://thisoldearth.net/Geology_Online-1_Subchapters.cfm?Chapter=5&Row=2http://teach.albion.edu/jjn10/physical-weathering/http://facstaff.gpc.edu/~pgore/geology/geo101/weather.htmhttp://www.studyblue.com/notes/note/n/earth-an-introduction-to-physical-geology-ch-6/deck/3947796http://w3.salemstate.edu/~lhanson/gls210/gls210_weath1.htmhttp://soil99.wikispaces.com/Mechanical+Weatheringhttp://www.ux1.eiu.edu/~cfjps/1300/weathering.html
![Page 17: Compare and contrast mechanical and chemical weathering. Explain how weathering affects Earth’s surface](https://reader036.vdocument.in/reader036/viewer/2022062300/56649e245503460f94b134c9/html5/thumbnails/17.jpg)
Photo creditshttp://www.ux1.eiu.edu/~cfjps/1300/
weathering.htmlhttp://sciencerocksav.webs.com/
chemicalweathering.htmhttp://www.metals-b2b.com/b2b/
plastic_pipes/2/http://www.desertusa.com/mag99/feb/
papr/speleothems.htmlhttp://www.scienceclarified.com/
everyday/Real-Life-Chemistry-Vol-2/Oxidation-Reduction-Reactions.html