WATERS EFFECT ON SHAPING EARTH’S

SURFACEBy: Daniel , Dylan, Brock

Pg.386-388

Wind, snow, earthquakes, and volcanic eruptions take part in earth’s shape.

Weathering- A gradual process of breaking down rock into smaller fragments.

2 Types of weathering- Physical weathering, chemical weathering.

pg.386-388 Weathering, erosion, and deposition

Physical weathering- The gradual process of breaking down rock physically without changing its composition.

Chemical weathering- the process through which rock is broken down when its minerals react with chemical agents such as oxygen, carbon , water, acids etc..

Continuation

Biological weathering-Physical or chemical weathering caused by plants or animals.

Erosion-The transport of sediments from one place to another by agents such as water, glaciers, gravity, and wind.

Deposition- Change of a substance from gas directly to solid without forming a liquid.

Weathering by water and ice pg. 389-390

Physical weathering is greatest in climates with a lot of moisture in the air or rain and snow, and where there are the largest temperatures.

Chemical weathering is greatest in climates with high temperatures, a lot of rain fall, and high level of pollution.

Chemical weathering occurs when plants die and decompose.

Karst- an are with sink holes

Erosion by water and ice

Greatest erosion is by moving water. It has the ability to physically break down

rock material into tiny pieces called sediments.

Ocean waves are a powerful force too. When they pound against the land they

can cause rocky coastlines to erode. Landslide-A sudden, rapid movement of

rock material down the slope of a hill or mountain.

continuation

Glaciers are a big part in the earths shape.

Striations-Scratch marks cut into rock by glaciers slowly moving over it.

Deposition by water and ice pg.395

Moving waters and glaciers pick up materials and move them.

Delta- built up sediments deposited where a river empties into a ocean or lake.

Citaations

http://www.shendapack.com/wp-content/uploads/2011/04/chemical-weathering-8.jpg

http://www.uwsp.edu/geo/faculty/ritter/images/lithosphere/mass_wasting_erosion/talus_DDS21_HLC0007.jpg

http://www.edu.pe.ca/southernkings/Pictures/glacier2.jpg

http://coyphotography.files.wordpress.com/2008/10/78416617jymawvvj_u3b5797.jpg