By: Daniel, Dylan, Brock

 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.

 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..

 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.

 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

 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.

 Glaciers are a big part in the earths shape.  Striations-Scratch marks cut into rock by glaciers slowly moving over it.

 Moving waters and glaciers pick up materials and move them.  Delta- built up sediments deposited where a river empties into a ocean or lake.

 content/uploads/2011/04/chemical- weathering-8.jpg content/uploads/2011/04/chemical- weathering-8.jpg  ages/lithosphere/mass_wasting_erosion/talus _DDS21_HLC0007.jpg ages/lithosphere/mass_wasting_erosion/talus _DDS21_HLC0007.jpg  s/glacier2.jpg s/glacier2.jpg  008/10/ jymawvvj_u3b5797.jpg 008/10/ jymawvvj_u3b5797.jpg