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weathering erosion

Total questions: 25

Worksheet time: 50mins

Name
Class
Date
1.

Rain washing away soil from a hillside is an example of what?

a)

Weathering

b)

Erosion

c)

Deposition

d)

Compaction

2.

Waves dropping sand on the beach is an example of what?

a)

Weathering

b)

Erosion

c)

Deposition

d)

Compaction

3.

Caves being formed by acid rain dissolving underground limestone are examples of what?

a)

Chemical Weathering

b)

Erosion

c)

Deposition

d)

Mechanical Weathering

4.

Deltas forming at the mouths of rivers are examples of what?

a)

Weathering

b)

Erosion

c)

Deposition

d)

Compaction

5.

Water getting into cracks, freezing, and breaking the rocks or pavement apart is an examples of what?

a)

Mechanical Weathering

b)

Erosion

c)

Deposition

d)

Chemical Weathering

6.
What is mechanical weathering?
a)
Process through which rocks are physically broken into smaller pieces.
b)
Rocks are broken down through chemical changes.
c)
Rocks are worn away from acid in plant roots.
d)
Rocks broken down by machinery.
7.
In which type of climate would weathering happen the fastest to a rock?
a)
wet and warm
b)
dry and cold
c)
wet and cold
d)
dry and warm
8.
How does freezing water cause the weathering of rocks?  The freezing water—
a)
keeps the rocks in place.
b)
makes the rocks last longer.
c)
expands cracks and breaks rocks.
d)
causes rocks to fall in landslides.
9.
A marble statue is left exposed to the weather.  Within a few years, the details on the statue have begun to weather away.  This weathering probably is caused by...
a)
oxygen in the air
b)
carbonic acid in rainwater
c)
lichens
d)
abrasion
10.
How might a weathered mountain appear different than an unweathered mountain?
a)
Weathered mountain would be taller.
b)
Weathered mountain would be rounder and less jagged.
c)
Weathered mountain would be more jagged and less rounded.
d)
Weathered mountain would have no trees.
11.
The action of rocks and sediment grinding against each other and wearing away
a)
oxidation
b)
glaciation
c)
abrasion
d)
ice wedging
12.

The diagram below represents the size and shape of a pebble. This pebble and 20 other pebbles having a similar size and shape were placed in a rock tumbler with water and allowed to abrade for five days.

a)
b)
c)
d)
13.
Which of the following statements is not true?
a)
Water causes more erosion on slopes without plants
b)
Water flows from higher to lower ground
c)
Faster water erodes more sediment
d)
As water slows, smaller particles are deposited first
14.
When a stream or river starts to slow down, it:
a)
Picks up more sediment
b)
Erodes more rapidly
c)
Deposits fine sediments, but continues carrying larger rocks
d)
Deposits larger rocks, but continues carrying finer sediment
15.
The steeper the slope, the ________ the stream.
a)
Slower
b)
Broader
c)
Faster
d)
Curvier
16.
What is HUMUS made from?
a)
Chick-Peas
b)
The remains of decayed plants and animals
c)
Beans
d)
Cheese
17.

Which profile best shows the general depositional pattern that occurs when water from a stream enters

the ocean?

a)
b)
c)
d)
18.

Each of the rock particles below has the same density

and volume. Which particle will most likely settle at

the fastest rate in moving water?

a)
b)
c)
d)
19.

Which size particle will remain suspended longest as

a river enters the ocean?

a)

pebble

b)

sand

c)

silt

d)

clay

20.
Sediments are deposited in a river delta because the 
a)
velocity of the river decreased
b)
force of gravity decreased
c)
volume of the river increases
d)
gradient of the river increases
21.

The accompanying cross section illustrates the general sorting of sediment by a river as it flows from a mountain to a plain. Which factor most likely caused the sediment to be sorted in the pattern shown?

a)

velocity of the river water

b)

hardness of surface bedrock

c)

mineral composition of the sediment

d)

temperature of the water

22.
Smooth, shiny rocks that have tumbled along the river bottom have been rounded and polished by
a)
water abrasion 
b)
wind abrasion
c)
chemical weathering
d)
ice wedging
23.

What color of soil has a lot of humus?

a)

black soils

b)

white soils

c)

reddish colored soils.

24.
What is the name of Horizon 1?
a)
Subsoil 
b)
Topsoil
c)
Bedrock 
d)
Parent Rock
25.

A sedimentary particle is dropped into a cylinder of water. The particle will take the longest time to settle if the particle has

a)

low density, small size, and spherical shape

b)

low density, small size, and flattened shape

c)

high density, large size, and spherical shape

d)

high density, large size, and flattened shape

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