Ch. 2 part 3

Question 1

A fertile soil that has equal parts of sand and silt combined with about half as much clay is called _____.

a. horizons
b. loam
c. humus
d. subsoil

Answer 1

b. loam

Question 2

The primary force behind erosion is ____

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

Answer 2

D. gravity

Question 3

A _____ forms when unmelted snow gets compacted down into ice.

a. moraine
b. glacier
c. load
d. delta

Answer 3

b. glacier

Question 4

A ______ is an example of erosion that is caused by gravity.

a. deflation
b. moraine
c. sand dune
d. rockslide

Answer 4

d. rockslide

Question 5

what is the difference between weathering and erosion?

Answer 5

weathering BREAKS DOWN rocks

erosion MOVES materials from one place to another

Question 6

What causes depositions to have a layered look?

Answer 6

Things settle according to weight. Heaviest on the bottom, lightest on the top, forming layers.

Question 7

There is a stream in a field. It is wide and shallow. If you dig out a new path that is narrower than the old path, how will the new path change the erosion of the stream?

Answer 7

The narrower stream path would cause the water to flow faster. Erosion would be greater as the water and load move faster.
The stream could even deepen.

Question 8

The Grant Memorial in Washington, DC, consists of bronze statues on white marble bases. Something has caused some of the bronze to dissolve and thus discolor the marble. Describe what may have caused the weathering of these bronze statues.

Answer 8

Acid rain may have caused weathering. Smoke, exhaust, and pollution in the air combine to form acid rain. the acid in the acid rain would cause the bronze to dissolve and run down to stain the marble.