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Weathering and Soil

Total questions: 29

Worksheet time: 44mins

Name
Class
Date
1.
When water freezes and thaws causing rocks to weather it is called
a)
weathering
b)
ice wedging
c)
chemical weathering
d)
erosion
2.

When rocks are worn away by glaciers it is called

a)

erosion

b)

abrasion

c)

cracking

d)

peeling

3.
If a rock is broken down because of some chemical reaction, it is called 
a)
permeable weathering
b)
mechanical weathering
c)
general weathering
d)
chemical weathering
4.
What type of weathering happens when plant roots break apart the soil?
a)
Mechanical
b)
Chemical
c)
Permeable
d)
General
5.

Which type of climate will cause rapid chemical weathering

a)

Dry and hot

b)

dry and cold

c)

wet and hot

6.
Which will cause faster weathering
a)
Less surface area 
b)
More surface area
c)
No surface area
d)
Surface area is not a factor
7.

The weathering of rock starts the process of ___________ formation

a)

Litter

b)

Soil

c)

Garbage

d)

Water

8.
These four components -
air                 water       
weathered rock            organic material
create what?
a)
Rock
b)
Silt
c)
Soil
d)
Garden waste
9.
The decayed organic matter in soil is called
a)
Humus
b)
Pebbles
c)
Bedrock
d)
Horizon
10.

What is another name for the A Horizon?

a)

Subsoil

b)

Weathered rock

c)

Bedrock

d)

Topsoil

11.

Living organisms help soil by

a)

Misplacing soil

b)

Creating humus and mixing the soil

c)

Digging up plants

d)

Eating plant roots

12.
Which of the following is an example of mechanical weathering?
a)

Rust formation

b)

frost wedging or ice wedging

c)

Paper being burned

d)

Acid rain

13.
Layers of soil are also known as:
a)
Soil layers
b)
Soil Horizons
c)
Soil sheets
d)
Soil cores
14.
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.
15.

Acid rain is a factor of chemical weathering because

a)

pollution is in the sky

b)

rain connected to dust falls and hits rocks so hard they break.

c)

there is friction between rain and rocks.

d)

pollution gets dissolved in water and falls as rain dissolving rocks (faster) over time.

16.
The definition of weathering is _______________________.
a)
the carrying away of rock
b)
the leaching of rock
c)
the breaking down of rock
d)
the permeability of rock
17.

Which of the following is(are) a type(s) of mechanical/physical weathering?

a)

abrasion

b)

plant growth

c)

ice wedging

d)

all of the above

18.
When plants, animals, and other organisms die, they break down and become part of the soil. What is this part of the soil called?
a)
sand
b)
silt
c)
clay
d)
humus
19.
Which layer of soil has more dead things in it?
a)
A horizon (topsoil) 
b)
B horizon (subsoil) 
c)
C horizon
d)
Bed rock
20.
Humus is.....
a)
the decayed dead parts of plants and animals in soil.
b)
A food we eat with pretzels.
c)
The tiny particles inside of soil
d)
The roots that come off of a plant and live in soil.
21.
What is plowing in curved rows that follow the shape of the land?
a)
contour plowing
b)
soil
c)
subsoil
d)
terrace farming
22.
What do you call the planting of crops on slopes, hills, or mountains in level sections?
a)
contour plowing
b)
subsoil
c)
terrace farming
d)
topsoil
23.
Substances that fill the spaces between soil particles are...
a)

water and air

b)

Pepperoni and sausage

c)

sand and clay

d)

moss and lichens

24.
Which of the following improves the fertility of soil by breaking down once living matter and creating humus
a)

plant roots

b)

rock particles

c)

sunlight 

d)

microorganisms 

25.
Soil that forms in regions with moderate rainfall and temperatures ~ rich soil, arable
a)
tropical
b)
desert
c)
temperate
d)
arctic
26.
This soil has a poorly developed A horizon because of little precipitation and little plant matter. 
a)
tropical
b)
temperate
c)
desert
d)
Iowa
27.
This type of soil forms in regions where the climate is often very warm and rainy.
a)
tropical
b)
temperate
c)
desert
d)
arctic
28.
This type of soil forms in very cold, dry regions and has poorly developed horizons. 
a)
tropical
b)
temperate
c)
desert
d)
arctic
29.
A property of soil that measures the size of soil particles.
a)
Pore Space
b)
Texture 
c)
Chemistry
d)
Bigness 

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