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Weathering and erosion

Total questions: 27

Worksheet time: 16mins

Name
Class
Date
1.

What often happens to rocks that undergo chemical weathering?

a)

They form crystals.  

b)

They produce acids.

c)

They become stronger.

d)

They crumble more easily.

2.

What happens to a rock when it is weathered?

a)

It is broken into smaller pieces.

b)

It is moved by wind, air, or water.

c)

It is built up as material is deposited.

d)

It is changed into another type of rock.

3.

_____________ weathering is the breaking down of rocks by chemical reactions.

a)

Chemical

b)

Physical

c)

Deposition

d)

Erosion

4.

____________ is the breaking down and wearing a way of rock by mechanical action.

a)

Erosion

b)

Oxidation

c)

Iron Oxide

d)

Abrasion

5.

Wind, water and gravity are NOT examples of which type of weathering?

a)

Chemical

b)

Mechanical

c)

Physical

d)

Both B and C

6.

the BREAKDOWN of rock into smaller pieces of the same rock without any change in its composition

a)
mechanical weathering
b)
chemical weathering
c)
erosion
d)
deposition
7.

the process in which sediment particles are picked up and MOVED from one place to another

a)
mechanical weathering
b)
chemical weathering
c)
erosion
d)
deposition
8.
Roots grow into cracks of a rock and pry them apart
a)
mechanical weathering
b)
chemical weathering
c)
erosion
d)
deposition
9.
rock is broken by the freezing and thawing of ice
a)
chemical weathering
b)
mechanical weathering
c)
erosion
d)
deposition
10.
rock particles wear away rock
a)
mechanical weathering
b)
chemical weathering
c)
erosion
d)
deposition
11.
plants produce weak acids that slowly dissolve the rock they are growing on
a)
chemical weathering
b)
mechanical weathering
c)
erosion
d)
deposition
12.
fossil fuels react with water producing acid rain that wears minerals away in the rock
a)
chemical weathering
b)
mechanical weathering
c)
erosion
d)
deposition
13.
carbon dioxide dissolves in water then weathers marble and limestone
a)
chemical weathering
b)
mechanical weathering
c)
erosion
d)
deposition
14.
animals break up the ground by burrowing
a)
mechanical weathering
b)
chemical weathering
c)
erosion
d)
deposition
15.
Canyons are formed by -
a)
earthquakes breaking rock layers apart.
b)
wind smoothing out rock formations.
c)
lava flowing from nearby volcanoes.
d)
rivers carrying sediments that weather and erode land.
16.
A cliff formed near the ocean.  Which statement best describes how this cliff formed?
a)
Warm air melted the rock.
b)
Sun rays evaporated the rock.
c)
Ocean waves washed away rock.
d)
Plant roots pushed away the rock.
17.

The dropping off and settling of sediments to the bottom of a lake or river is called

a)

erosion

b)

deposition

c)

weathering

18.

What is the process process by which water, ice, wind or gravity picks up and moves weathered rock and soil from one place to another.

a)
deposition
b)
landslide
c)
weathering
d)
erosion
19.

Weathering is the process of -

a)

Moving sediment from one place to another

b)

Dropping or leaving sediment in a location

c)

Breaking down rocks into sediment

20.
Select the answer that shows the order of events a rock goes through.
a)
erosion, weathering, deposition
b)
weathering, erosion, deposition
c)
deposition, weathering erosion
d)
erosion, deposition, weathering
21.
Physical and chemical weathering both
a)
change rocks into new materials.
b)
dissolve rocks.
c)
break rocks into smaller pieces.
d)
require exposure to air.
22.
This type of weathering occurs when rock is physically broken down into smaller pieces of rock.
a)
mechanical weathering
b)
chemical weathering
c)
erosion weathering
d)
deposition
23.
This type of weathering occurs when rocks weaken then break down due to chemical changes in the composition of the rock.
a)
mechanical weathering
b)
chemical weathering
c)
erosion weathering
d)
deposition
24.
Weeds growing into the cracks in a sidewalk and the sidewalk begins to crumble is an example of:
a)
mechanical weathering
b)
chemical weathering
25.
Exposure to rain and oxygen causes the metal minerals in rocks to rust and fall apart.  This is an example of:
a)
mechanical weathering
b)
chemical weathering
26.
How is mechanical weathering different from chemical weathering?
a)
Chemical weathering happens over much shorter time frame than mechanical weathering.
b)
Chemical weathering changes the chemical composition of rocks; mechanical weathering does not.
c)
Chemical weathering occurs only in tropical climates; mechanical weathering occurs only in cool climates.
d)
Chemical weathering occurs only in the mountains; mechanical weathering occurs only on flat land.
27.

What is Erosion ?

a)

The process of moving away weathered rocks

b)

Is a natural land shape or feature

c)

large sheet of flowing Ice

d)

A gorge between a cliff of rocks

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