Science Review PowerPoint 11/ 16/10

Annie Nelson

Amelia Jones

Alysa Snell

AbrasionAbrasion is rocks rubbing together or water to make a round smooth surface.

Exfoliation

Exfoliation is the breaking down of rocks into layers.

Organic Activity

Organic Activity is when organisms are on the rock

Frost Wedging

When liquid water freezes it expands 9% in an outward force which makes the cracks larger …. And after many freeze thaw cycles the rock breaks into pieces.

Hydrolysis

Iron-bearing silicate minerals weather to form clays by hydrolysis.

Dissolution

Dissolving rocks slowly making Caves and Canyons.

Oxidation

Oxygen reacted with Iron forming Iron Oxide or Rust.

Acid – Carbonation, Precipitation, And Plant Acid

Carbonic Acid- Rocks changing color and texture.

Acid Rain- Creating pores in the rock.

Plant Acid- Moss slowly deteriorating the rock. :0