Weathering and Erosion

What are the agents of erosion?

• oxidation, acid rain, abrasion, root rust, root pry, abrasion
• deflation and depostion
• water, wind, ice, gravity

What is the breaking down of rocks called?

• erosion
• deposition
• weathering
• compaction

When water goes into cracks in rocks, freezes, expands, thaws and repeats the process it is called _____________________.

• Ice wedging
• root pry
• animal action
• oxidation

__________________________ is the breaking down of rocks that does not change the mineral makeup of the rocks- just makes smaller pieces

• Chemical weathering
• Mechanical weathering

__________________occurs when materials containing iron are exposed to oxygen and water.

• Erosion
• Root pry
• Ice wedging
• Oxidation

the general terms for the movement of sediment by wind, water, glaciers

• weathering

• erosion

• deposition

the breakdown or decomposition of rock that takes place when minerals change through chemical processes

• chemical weathering
• mechanical weathering
• erosion
• deposition

animals break up the ground by burrowing

• mechanical weathering
• chemical weathering
• erosion
• deposition

animals break up the ground by burrowing

• mechanical weathering
• chemical weathering
• erosion
• deposition

A river moves rocks by carrying them in its current.

• Weathering
• Erosion