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Chapter 15

True or False

True or False
Based on the information in the chapter, determine whether each of these statements is true or false.

This activity contains 14 questions.

	Water is relatively unimportant as an erosional agent in arid regions simply because there is so little of it.    True  False

	Deposits of wind-blown sand differ from loess deposits in that sand deposits tend to take the form of ridges or mounds.    True  False

	A playa is a dry lake bed on the floor of a desert basin.    True  False

	Arid and semi-arid regions cover some two-thirds of Earth's surface.    True  False

	Extensive loess dune fields occupy significant portions of the Sahara Desert.    True  False

	Extensive loess deposits can be found around the world, including parts of the Ukraine, Argentina, China, and New Zealand, as well as in the central and northwestern United States.    True  False

	Star dunes form as a result of winds blowing primarily from one direction.    True  False

	Seifs are crescentic dunes with sinuous crests that are usually shorter than longitudinal dunes.    True  False

	Blowouts are caused by eolian deflation.    True  False

	Because it is constantly present, blowing sand in an arid region can bring about more erosion than water can in a humid region.    True  False

	Erg deserts can be distinguished from sand seas by the presence of desert pavements.    True  False

	Contrary to popular belief, deserts are not really wastelands, nor are all deserts alike.    True  False

	Playas are common features of the Basin and Range Province of the western United States and Mexico.    True  False

	Yardangs are depositional features carved by the wind into streamlined shapes.    True  False

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