Desert Environments

Question 1

What is the Hamada environment like?

Answer 1

Mountain areas with bare, rocky areas.

Question 2

What is the Hamada environment formed by?

Answer 2

Weathering and erosion processes

Question 3

What is the largest environment in the Sahara?

Answer 3

Hamada

Question 4

What is the Reg environment like?

Answer 4

Gravel/pebble plain forming a transitional zone between the Hamada and the erg

Question 5

What is desert pavement?

Answer 5

Hamada and Reg together

Question 6

What is the Erg environment like?

Answer 6

Sand Dunes/Sand Seas

Question 7

As a percentage, how many deserts in the world are sand dunes?

Answer 7

25%

Question 8

In the Sahara, as a percentage, how much area is the erg?

Answer 8

28%

Question 9

What is a positive feedback loop example for Desertification?

Answer 9

Desertification leads to decreased agricultural and livestock yields - local populations increase livestock numbers and extend and intensify cultivation
Deforestation and overgrazing occurs which causes soil quality to degrade and reduced vegetation leads to soil erosion by water and wind

Question 10

How much as a % do hot deserts cover the land surface?

Answer 10

25-30%