Question

cp earth science unit 2 pre - test
multiple choice
identify the choice that best completes the statement or answers the question.

1. what is stream load?

a. rock and other materials that a stream carries
b. the volume of water in a stream
c. an elevation change
d. the speed of a stream over time

1. what is an early step in the formation of a lake?

a. a river overflows its banks.
c. erosion causes a valley.
b. water collects in a depression.
d. evaporation exceeds precipitation.

1. climates that have the fastest rate of weathering are

a. cold and dry.
c. hot and dry.
b. alternating hot and cold.
d. hot and wet.

1. when new snow is added to a glacier faster than ice and snow melt, the glacier

a. stays the same size.
c. gets smaller.
b. gets larger, then smaller.
d. gets larger.

1. what is the difference between a delta and an alluvial fan?

a. an alluvial fan forms in water, and a delta forms on land.
b. a delta forms in water, and an alluvial fan forms on land.
c. the alluvial fan is much more fragile than the delta.
d. the delta is much older than the alluvial fan.

1. when a rivers load and discharge increase,

a. it slows down.
c. it becomes a sediment bar.
b. its erosive power decreases.
d. its erosive power increases.

1. oxidation, hydrolysis, acid precipitation, and carbonation are examples of

a. abrasion.
c. erosion.
b. mechanical weathering.
d. chemical weathering.

1. what is a tributary?

a. a lake that feeds into a stream
b. a stream that dries out
c. the area drained by a river system
d. a stream that feeds another stream or lake

Explanation:

1. Question 1:

• Stream load is defined as the rock and other materials that a stream carries. Option a is correct.

1. Question 2:

• An early step in lake formation is when water collects in a depression. Option b is correct.

1. Question 3:

• Hot and wet climates have the fastest rate of weathering. Chemical reactions are more active in such conditions. Option d is correct.

1. Question 4:

• When new snow is added to a glacier faster than ice and snow melt, the glacier grows larger. Option d is correct.

1. Question 5:

• A delta forms in water (at the mouth of a river), and an alluvial fan forms on land (at the base of a mountain). Option b is correct.

1. Question 6:

• When a river's load and discharge increase, its erosive power increases. More water and more sediment can erode more effectively. Option d is correct.

1. Question 7:

• Oxidation, hydrolysis, acid precipitation, and carbonation are chemical processes. They are examples of chemical weathering. Option d is correct.

1. Question 8:

• A tributary is a stream that feeds another stream or lake. Option d is correct.

Answer:

1. a. rock and other materials that a stream carries
2. b. Water collects in a depression
3. d. hot and wet
4. d. gets larger
5. b. A delta forms in water, and an alluvial fan forms on land
6. d. its erosive power increases
7. d. chemical weathering
8. d. a stream that feeds another stream or lake