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Fill in the Blank


This activity contains 10 questions.

Question 1
1 The buttes, pinnacles, and mesas of arid landscapes are formed by __________.
 
desertification
abrasion
surface creep
deflation
differential weathering
End of Question 1


Question 2
2 The geomorphic term for Uluru (Ayers Rock) in Australia (Figure 15.21) is __________.
 
ventifact
saltation dome
erg
inselberg
bolson
End of Question 2


Question 3
3 __________ dunes have a crescent shape with the horns pointing downwind.
 
Barchan
Transverse
Parabolic
Longitudinal
Star
End of Question 3


Question 4
4 A(n) __________ is a continuous apron of coalesced alluvial fans along the base of a mountain range.
 
desert pavement
erg
parabolic dune
bolson
bajada
End of Question 4


Question 5
5 Runoff from a rare precipitation event in a desert may occur in the form of __________.
 
bajada sheetflow
a debris avalanche
a flash flood
a loess storm
an overland flood
End of Question 5


Question 6
6 The continent with the fewest and smallest loess deposits is __________.
 
North America
South America
Australia
Africa
Europe
End of Question 6


Question 7
7 By comparison, the continent with the smallest area of sandy regions is __________.
 
North America
Antarctica
South America
Asia
Africa
End of Question 7


Question 8
8 Desert pavement is formed __________.
 
as a byproduct of desertification
from larger rocks and fragments left after deflation and sheetwash
from glacial outwash deposits
from the coalescing of multiple alluvial fans
from flash flood erosion
End of Question 8


Question 9
9 __________ dunes form in response to complicated, changing wind patterns, and have multiple slipfaces.
 
parabolic
sief
transverse
ventifact
star
End of Question 9


Question 10
10 For general reference, this is a generalized profile sketch of an alluvial fan.
fan_profile.gif
The types of sediment most commonly found at the playa will be _______.
 
pebbles and sand
gravel and clay
clay and salt
pebbles and silt
sand and silt
End of Question 10






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