EARTHS SYSTEMS Weathering

Which of the following weathering processes involves the constant freezing and thawing of water?

• exfoliation

• spheroidal weathering

• unloading

• frost wedging / ice wedging

Which of the following is an example of chemical weathering?

• biological activity

• unloading

• oxidation (reactions with oxygen)

• frost wedging

Which of the following is an example of mechanical weathering?

• reactions with water

• reactions with oxygen

• frost wedging

• dissolution

Whenever the characteristics and chemical composition of weathered materials have been altered, they have undergone ____.

• chemical weathering

• mechanical weathering

• mass movement

• frost wedging

Which of the following is the result of chemical weathering?

• a rock that has been changed into one or more new compounds

• a rock that has been split in two

• a rock that has lost its outer layers

• a rock that has been broken into tiny pieces

Which of the following are factors that impact the rate of weathering in rocks? (SELECT ALL THAT APPLY)

• biological evolution

• climate

• rock characteristics

• amount of exposed surface area

_ chemical or mechanical breakdown of rocks, soils or minerals at earth's surface

• weathering

• erosion

• deposition

• fossilization

When water freezes, its volume _.

• doesn't change

• decreases

• disappears

• increases

The atmospheric gas, carbon dioxide, forms a mild acid when dissolved in water called _ acid.

• sulfuric

• carbonic

• hydrochloric

• pyruvic

The example in this image would BEST demonstrate what concept?

• erosion

• chemical weathering

• mechanical weathering

• mass wasting