Types of weathering and erosion

What is weathering?

• The process by which
  water, ice, wind or gravity
  moves fragments of rock
  and soil.
• The process by which
  water, ice, wind or gravity
  deposit rock sediments
  and soil in a new place.
• The breaking down of
  Earth’s crust into smaller
  and smaller pieces.

Which of the following is NOT a type of physical weathering?

• burrowing plants
• ice wedging
• plant roots
• acid rain

Which of the following is an example of mechanical weathering?

• Acidic groundwater dissolving limestone
• frost wedging
• Paper being burned

What is mechanical weathering?

• Process through which rocks are physically broken into smaller pieces.
• Rocks are broken down through chemical changes.
• Rocks are worn away from acid in plant roots.
• Rocks broken down by machinery.

How do plants weather rocks?

• during photosynthesis
• when roots grow into cracks of rocks and expand the rock
• when the plant moves water from the roots to the leaves

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

oxidation produces rust on some rocks containing iron

• chemical weathering
• mechanical weathering
• erosion
• deposition

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

• chemical weathering
• mechanical weathering
• erosion
• deposition

carbon dioxide dissolves in water then weathers marble and limestone

• chemical weathering
• mechanical weathering
• erosion
• deposition