Quiz about Mechanical & Chemical Weathering

Question 1

The natural chemical or physical processes that breaks down rock on Earth's surface.

Accepted Answer

weathering

Answer

erosion

Answer

deposition

Answer

jackhammering

Question 2

This type of weathering occurs when rock is physically broken down into smaller pieces of rock.

Accepted Answer

mechanical weathering

Answer

chemical weathering

Answer

erosion weathering

Answer

deposition

Question 3

These rocks were made smooth by wind blowing smaller rock particles across their surface.  This is an example of:

Accepted Answer

abrasion

Answer

ice wedging

Answer

chemical weathering

Answer

acid rain

Question 4

These rocks were broken apart from the continuous freeze/thaw of water in the cracks of the rocks. This is an example of:

Accepted Answer

ice wedging

Answer

acid rain

Answer

permeability

Answer

abrasion

Question 5

These gravestones have slowly broken down and turned a blackish color due to the action of:

Accepted Answer

acid rain

Answer

ice wedging

Answer

abrasion

Answer

mechanical weathering

Question 6

How might a weathered mountain appear different than an unweathered mountain?

Accepted Answer

Weathered mountain would be rounder and less jagged.

Answer

Weathered mountain would be taller.

Answer

Weathered mountain would be more jagged and less rounded.

Answer

Weathered mountain would have no trees.

Question 7

How is mechanical weathering different from chemical weathering?

Accepted Answer

Chemical weathering changes the chemical composition of rocks; mechanical weathering does not.

Answer

Chemical weathering happens over much shorter time frame than mechanical weathering.

Answer

Chemical weathering occurs only in tropical climates; mechanical weathering occurs only in cool climates.

Answer

Chemical weathering occurs only in the mountains; mechanical weathering occurs only on flat land.

Question 8

Weeds growing into the cracks in a sidewalk and the sidewalk begins to crumble is an example of:

Accepted Answer

mechanical weathering

Answer

chemical weathering

Question 9

A metal statue slowly turning green after years of being outside is an example of:

Accepted Answer

chemical weathering

Answer

mechanical weathering

Question 10

Potholes forming in the road after a cold winter is an example of:

Accepted Answer

mechanical weathering

Answer

chemical weathering

Question 11

Rocks along a riverbed that are smoothed from continuously moving water and sediment rubbing against them is an example of:

Accepted Answer

mechanical weathering

Answer

chemical weathering

Question 12

A piece of sandstone changing color (from brown to rusty red) from exposure to water and air is an example of:

Accepted Answer

chemical weathering

Answer

mechanical weathering

Question 13

The formation of stalactites and stalagmites in a cave as water mixed with carbon dioxide creates carbonic acid, which dissolves away the limestone, is an example of:

Accepted Answer

chemical weathering

Answer

mechanical weathering

Question 14

Exposure to rain and oxygen causes the metal minerals in rocks to rust and fall apart.  This is an example of:

Accepted Answer

chemical weathering

Answer

mechanical weathering

Question 15

Lichens (small green plants) growing on a large boulder release enzymes and other acids that slowly break the rock apart. This is an example of:

Accepted Answer

chemical weathering

Answer

mechanical weathering

Question 16

Select the answer that shows the order of events a rock goes through.

Accepted Answer

weathering, erosion, deposition

Answer

erosion, weathering, deposition

Answer

deposition, weathering erosion

Answer

erosion, deposition, weathering

Question 17

How are canyons formed?

Accepted Answer

Rivers erode soil and rock over time, leaving behind canyon walls.

Answer

Wind blows sand into high piles, which form the canyon walls.

Answer

Gravity causes rocks to fall from mountain sides onto valley floors.

Answer

Ice freezes and thaws in cracks of rocks, and the cracks become canyons.

Question 18

A cliff formed near the ocean.  Which statement best describes how this cliff formed?

Accepted Answer

Ocean waves washed away rock.

Answer

Warm air melted the rock.

Answer

Sun rays evaporated the rock.

Answer

Plant roots pushed away the rock.

Question 19

Which type of climate will have faster chemical weathering?

Accepted Answer

Hot and Wet

Answer

Cold and Dry

Answer

Hot and Cold

Answer

Cold and Wet

Question 20

What are the two factors that affect the rate at which weathering occurs?

Accepted Answer

type of rock and climate

Answer

climate and mass of rock

Answer

climate and size of rock

Answer

type of rock and size of rock

Question 21

Which of the following is an example of chemical weathering?

Accepted Answer

Acid rain dissolving limestone

Answer

roots breaking into concrete

Answer

paper being ripped

Answer

Water running over rocks

Question 22

Which of the following is the most important agent of chemical weathering to form this cave?

Accepted Answer

Water - It can carry acid and dissolve rock

Answer

Erosion - Moves the rocks from one place to another

Answer

Wind - It displaces rocks

Answer

Exfoliation - New cracks give chemical reactions the chance to operate

Question 23

Carbon dioxide (CO2) combines with water as raindrops fall through the atmosphere. This makes a weak acid, called carbonic acid. Carbonic acid is a very common in nature, where it works to dissolve rock. Pollutants, such as sulfur and nitrogen from fossil fuel burning, create sulfuric and nitric acid. Sulfuric and nitric acids are the two main components of acid rain, which speeds up chemical weathering.
This statue was probably destroyed by _____.

Accepted Answer

Acid Rain

Answer

Wind

Answer

Humans

Answer

Animals

Question 24

Ground breaks away by animals burrowing

Accepted Answer

<p>Mechanical</p>

Answer

<p>Chemical</p>

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