Question

1. the process by which softer, less weather resistant rocks wear away at a faster rate than harder, more weather resistant rocks do is called

a. mechanical weathering.
b. chemical weathering.
c. differential weathering.
d. weathering.

1. which of the following is not an agent of mechanical weathering?

a. acid
b. gravity
c. wind
d. ice

1. when a glacier deposits till in the form of a ridge,

a. a moraine forms.
b. a glacial lake forms.
c. a cirque forms.
d. a crevasse forms.

1. what is the name for the land that is drained by a river system?

a. bedrock
b. floodplain
c. watershed
d. water table

1. the layer of an aquifer in which the pore space is completely filled with water is called the zone of

a. capillaries.
b. porosity.
c. aeration.
d. saturation.

1. all of the following are layers of mature residual soils except

a. humus.
b. weathered bedrock.
c. subsoil.
d. topsoil.

1. in what climates is the weathering rate slowest?

a. warm, humid climates
b. cold, wet climates
c. hot, dry climates
d. alternating hot and cold climates

1. when water changes state from a gas to a liquid, the process is called

a. condensation.
b. evapotranspiration.
c. runoff.
d. precipitation.

1. which of the following is a form of mechanical weathering?

a. abrasion
b. oxidation
c. carbonation
d. hydrolysis

1. the movement of a large block of soil and rock downhill in one piece when it becomes unstable is called

a. landslide.
b. rockfall.
c. slump.
d. creep

1. how does a rivers speed affect its erosive ability?

a. faster rivers erode the river channel more quickly than slower rivers.
b. slower rivers erode the river channel more quickly than faster rivers.
c. slower rivers carry more stream load and are more erosive.
d. faster rivers carry less stream load and are less erosive.

Explanation:

• Question 19: Differential weathering is when softer, less resistant rocks wear away faster than harder ones.
• Question 20: Acid is a chemical weathering agent, not mechanical.
• Question 21: When a glacier deposits till as a ridge, it's a moraine.
• Question 22: The land drained by a river system is a watershed.
• Question 23: The zone of an aquifer with pore space filled with water is saturation.
• Question 24: Humus is organic matter, not a layer of mature residual soil.
• Question 25: In hot, dry climates, weathering is slow due to lack of water and temperature extremes.
• Question 26: Water changing from gas to liquid is condensation.
• Question 27: Abrasion is mechanical weathering; oxidation, carbonation, and hydrolysis are chemical.
• Question 28: A large block of soil and rock moving downhill is a landslide.
• Question 29: Faster rivers erode the channel more quickly.

Answer:

1. c. differential weathering
2. a. acid
3. a. a moraine forms
4. c. watershed
5. d. saturation
6. a. humus
7. c. hot, dry climates
8. a. condensation
9. a. abrasion
10. a. landslide
11. a. Faster rivers erode the river channel more quickly than slower rivers.