Science 4th qtr Review (Part 2)

It occurs when runoff water forms small channels as it concentrates down a

                    slope.

• Glacial Erosion

• Gully Erosion

• Rill Erosion

It occurs when surface water moves into and through dispersive subsoils.

• Glacial Erosion

• Gully Erosion

• Tunnel Erosion

It is caused by the destruction of vegetation on riverbanks and the removal of

                   sand and gravel from the stream bed.

• Glacial Erosion

• Sheet Erosion

• Stream Bank Erosion

It occurs when a thin layer of topsoil is removed over a whole hillside paddock

                    and may not be readily noticed

• Glacial Erosion

• Sheet Erosion

• Stream Bank Erosion

It consists of open, unstable channels that have been cut more than 30

                   centimeters deep into the ground.

• Glacial Erosion

• Gully Erosion

• Rill Erosion

Acids change the minerals in the rock.

• Physical

        Weathering

• Chemical Weathering

Rust changes the color of the rocks because of Oxygen

• Physical

        Weathering

• Chemical Weathering

Living organisms perform chemical reactions to obtain minerals from soil and rocks.

• Physical

        Weathering

• Chemical Weathering

Plant roots can grow in cracks

• Physical

        Weathering

• Chemical Weathering

Saltwater gets into cracks in rocks.

• Physical

        Weathering

• Chemical Weathering