Weathering

Mechanical weathering ____. a. breaks apart rocks by physical processes b. occurs when chemical reactions dissolve or change the minerals in rocks c. occurs when iron is exposed to oxygen and water d. none of the above

A

Which of the following is NOT an example of chemical weathering? a. natural plant acid breaking down a rock c. oxidation of metals b. acid rain deteriorating a marble statue d. ice wedging in rock

D

Ice wedging is a form of chemical weathering.

False

Mechanical weathering is more rapid in warm, wet climates.

False

Plants can only cause mechanical weathering.

False

the rate of chemical weathering increases with this

Surface Area

In areas where freezing and thawing occur frequently, rocks weather rapidly because of the ____ of freezing water. a. evaporation c. leaching b. expansion d. oxidation

B

Ice wedging is brought about by ____. a. carbonic acid freezing on rocks c. water freezing and thawing b. water and oxygen reacting d. rocks colliding with each other

C

The difference between mechanical and chemical weathering is ____. a. the length of time each takes to break up a rock b. that only chemical weathering involves water c. the way they affect the makeup of a rock d. all of the above

C

Chemical weathering is probably faster along the Amazon River than in the Himalayas.

True