Unit 5 Wind

Question 1

What are the three ways winds transport soil and sand?

Answer 1

• Transported
• Suspended in the air
• Bounced along the ground

These processes are essential in understanding wind erosion and deposition dynamics.

Question 2

In which environments are wind erosion and deposition most common?

Answer 2

Deserts and semi-deserts

These areas have limited vegetation, making them more susceptible to the effects of wind.

Question 3

What is erosion caused by wind called?

Answer 3

Wind erosion

Question 4

What process involves loose particles blown by wind knocking against other objects?

Answer 4

Abrasion

Question 5

Where is wind erosion greatest?

Answer 5

Close to the ground

Question 6

Name an example of a feature produced by wind erosion.

Answer 6

• Mushroom rock
• Yardangs
• Troughs

Question 7

True or False: Wind erosion can only occur at high altitudes.

Answer 7

False

Question 8

What natural phenomenon can blow for days and affect deposition?

Answer 8

Desert wind storms

They can transport sand and other materials over long distances.

Question 9

What aspects can desert wind storms completely change?

Answer 9

Position and Shape

This refers to the movement and alteration of sand dunes.

Question 10

What are the three main shapes produced by deposition?

Answer 10

• Barchans
• Sief
• Transverse

These shapes represent different types of sand dunes formed by wind.

Question 11

What are yardangs?

Answer 11

Long ridges carved by wind erosion

Yardangs are prominent features in arid environments, shaped by the wind’s persistent action.

Question 12

What is the main cause of wind erosion and deposition?

Answer 12

Winds pick up soil and sand and transport it, suspended in the air or cause it to bounce along the ground

This process is especially visible in areas with little vegetation cover, such as deserts.

Question 13

In which environments is wind erosion and deposition most obvious?

Answer 13

Deserts and semi-deserts

These areas typically have sparse vegetation, making the effects of wind more pronounced.

Question 14

What phenomenon can remove paint from vehicles in the Sahara Desert?

Answer 14

Abrasion from a sand storm

The intense wind and sand movement can cause significant damage to surfaces.

Question 15

What is abrasion in the context of wind erosion?

Answer 15

The process where loose particles blown by the wind knock against other objects and cause erosion

Most features produced by wind erosion are a result of this process.

Question 16

Where is abrasion greatest during wind erosion?

Answer 16

Close to the ground

This is where the most material is transported in the wind.

Question 17

What is a mushroom rock?

Answer 17

A rock feature with a much narrower base than the upper part of the rock

Mushroom rocks are formed through the process of abrasion by wind.

Question 18

What are the two types of rocks mentioned in relation to wind erosion?

Answer 18

• Soft rock
• Hard rock

Soft rock wears away more quickly than hard rock under the influence of wind erosion.

Question 19

True or False: Hard rock wears away more quickly than soft rock.

Answer 19

False

Hard rock is more resistant to erosion compared to soft rock.

Question 20

What features are produced by wind erosion?

Answer 20

• Mushroom rocks
• Yardangs
• Troughs

These features result from the abrasive action of wind on the landscape.

Question 21

What is the primary feature produced by deposition in deserts?

Answer 21

Sand dune

Sand dunes are formed when material carried by the wind is deposited after the wind speed decreases.

Question 22

What happens to sand dunes after desert wind storms?

Answer 22

The position and shape of the sand dunes is often completely changed

Sand dunes are dynamic and do not stay in one place for very long.

Question 23

What are the three common types of sand dune shapes?

Answer 23

• Barchans
• Sief dunes
• Transverse dunes

These shapes vary based on wind direction and speed.

Question 24

What is the process called when material carried by wind is deposited?

Answer 24

Deposition

This occurs when the speed of the wind drops.

Question 25

True or False: Sand dunes remain static and do not change shape.

Answer 25

False ## Footnote Sand dunes constantly change shape due to the action of the wind.

Question 26

Fill in the blank: Material carried in the wind is deposited once the speed of the wind _______.

Answer 26

drops ## Footnote This is a key factor in the formation of deposition features.

Question 27

What is the term for the steep side of a sand dune where sand slips down?

Answer 27

Slip face ## Footnote The slip face is a characteristic feature of sand dunes.

Question 28

How long can desert wind storms blow?

Answer 28

Several days ## Footnote Extended wind storms can significantly alter the landscape.