Mechanical and Chemical Weathering

Weathering, Erosion, Deposition

and Mass Movements

Multiple Choice

The chemical or mechanical process of breaking down rock is called _____.

• Weathering
• Exfoliation
• Frost wedging
• Soil

Multiple Choice

Process that breaks down rocks and minerals into smaller pieces but doesn't change composition.

• Gully erosion
• Deposition
• Chemical Erosi

• Mechanical weathering

Multiple Choice

Process that occurs when water repeatedly freezes and thaws. 

• Residual soil
• Frost wedging
• Erosion
• Oxidation

Multiple Choice

Process where outer rock layers

are stripped away. 

• Soil horizon
• Deposition
• Exfoliation
• Rill erosion

Multiple Choice

Process where rock and minerals undergo

changes in composition.

• Chemical weathering
• Frost wedging
• Mechanical Weathering

• Exfoliation

Multiple Choice

Chemical reaction of Oxygen with other substances. 

• Weathering
• Erosion
• Oxidation
• Transported soil

Multiple Choice

What factor causes a mudslide? 

• the amount of CO2 in the area
• the amount of pollution in an area
• the amount of wind in an area
• the amount of rain in an area 

Multiple Choice

This image show an example of a 

• Rock fall
• Slump
• Creep
• Mudflow

Multiple Choice

Removal and transport of weathered materials from one location to another.

• Erosion
• Deposition
• Weathering
• Chemical weathering

Multiple Choice

This image show an example of a 

• Rock fall
• Slump
• Creep
• Mudflow

Multiple Choice

This image show an example of a 

• Rock fall
• Slump
• Creep
• Mudflow

Multiple Choice

Occurs when eroded materials are dropped in another location.

• Weathering
• Exfoliation
• Deposition
• Frost wedging

Multiple Choice

Loose covering of weathered rock and decayed organic matter

• Frost wedging
• Erosion
• Deposition
• Soil

​Erosion

Multiple Choice

Trees, walls, and fence posts leaning downhill are a sign of ______. 

• Rockfalls
• Mud Flow
  Mud Flows
• Creep
• Slump

Multiple Choice

Which of the following is NOT a type of chemical weathering?

• water
• carbon dioxide
• ice wedging
• living organisms secreting acid to break down rocks

Multiple Choice

Which of the following is NOT a type of physical weathering?

• burrowing plants
• ice wedging
• plant roots
• acid rain

Multiple Choice

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...

• oxygen in the air
• carbonic acid in rainwater
• lichens
• abrasion

Multiple Choice

Which of the following is an example of mechanical weathering?

• Acidic groundwater dissolving limestone
• frost wedging
• Paper being burned

Multiple Choice

How do plants weather rocks?

• during photosynthesis
• when roots grow into cracks of rocks and expand the rock
• when the plant moves water from the roots to the leaves

Multiple Choice

Wind erosion forms what type of landform?

• meander
• drumlin
• sand dune
• sand bar

Multiple Choice

What type of erosion causes landslides?

• wind
• waves
• water
• gravity

Multiple Choice

Which of the following is not a form of erosion?

• Frost Wedging
• Wind
• Glacial
• Water

Multiple Choice

The most important factors in determining the rate of weathering are - 

• carbon dioxide and acid rain
• abrasion and acids from plant roots
• animal actions and oxygen
• rock type and climate

Open Ended

What are the main agents of erosion? 

Multiple Choice

What is the major cause of weathering and erosion to form canyons?

• wind
• ice
• glaciers
• moving water

Multiple Choice

With a steeper slope, we would expect to see_____.

• less erosion

• more erosion

• the same amount of erosion

• no erosion at all

Multiple Choice

When a stream or river starts to slow down, it _____.

• Picks up more sediment
• Erodes more rapidly
• Deposits fine sediments, but continues carrying larger rocks
• Deposits larger rocks, but continues carrying finer sediment

Multiple Choice

The steeper the slope, the ________ the stream.

• Slower
• Broader
• Faster
• Curvier

Multiple Choice

At which location is the greatest amount of sediment most likely being deposited?

• A
• B
• C
• D

Multiple Choice

________________ are streams that flow together to make a river.

• source

• tributaries

• mouth

• drainage basin

Multiple Choice

What landform can you see in the picture?

• U shaped valley

• V Shaped Valley

• Floodplain

• Waterfall

​Mass

​Wasting

Multiple Choice

What is the land next to the river called and how would you describe it?

• Floodplain, steep land next to the river.

• Floodplain, flat land next to the river.

• Floodplain, flat land away from the river.

• Floodplain, flat land on top of the river.

Multiple Choice

This river located in Africa is considered to be the longest river

• The Mississippi

• The Amazon

• The Nile

• The Ganges

What is Chemical Weathering?

the transformation of rock into one or more new compounds.

Multiple Choice

The best known and most common wind deposits are called

• deflations

• saltation

• dunes

• loess

Multiple Choice

The diagrams  shows a natural process that weathers rock.
 Which statement best explains why this process results in weathering?

• frozen water acts as a solute
• water expands when it freezes
• the mass of water increases when it freezes
• frozen water dissolves most types of rock

Chemical Weathering: Oxygen

Oxygen in atmosphere combines with iron in rocks & minerals.This results in rust (red rocks).

Multiple Choice

What kind of weathering causes the mineral composition of rocks to change?

• mechanical weathering
• permeable weathering
• chemical weathering
• physical weathering

Multiple Choice

A rock containing iron becomes soft and crumbly and reddish-brown in color.  It probably has been chemically weathered by _____.

• abrasion
• carbon dioxide
• oxygen
• acid rain

Erosion by Wind & Waves

Kangaroo Island, Australia

Rocks shaped by wind and waves

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