4.7b

the process in which sediment particles are picked up and moved from one place to another

• mechanical weathering

• chemical weathering

• erosion

• deposition

the expansion of desert conditions in areas where the natural plant cover has been destroyed

• desertification

• exfoliation

• abrasion

• erosion

the part of the erosion process in which sediment travels to a new location and is laid down or dropped off

• chemical weathering

• mechanical weathering

• erosion

• deposition

Roots grow into cracks of a rock and pry them apart

• mechanical weathering

• chemical weathering

• erosion

• deposition

oxidation produces rust on some rocks containing iron

• chemical weathering

• mechanical weathering

• erosion

• deposition

rock is broken by the freezing and thawing of ice

• chemical weathering

• mechanical weathering

• erosion

• deposition

rock particles wear away rock

• mechanical weathering

• chemical weathering

• erosion

• deposition

plants produce weak acids that slowly dissolve the rock they are growing on

• chemical weathering

• mechanical weathering

• erosion

• deposition

fossil fuels react with water producing acid rain that wears minerals away in the rock

• chemical weathering

• mechanical weathering

• erosion

• deposition

animals break up the ground by burrowing

• mechanical weathering

• chemical weathering

• erosion

• deposition