The main dune form in most deserts is called a(n) ________
A) barchan
B) bajada
C) self
D) transverse
E) alluvial
Answer: A
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Two freight cars of identical mass roll towards each other on a level track. The speed of one car is 2 m/s and the other is 1 m/s. After collision they couple and roll together with a speed of
A. 0.67 m/s. B. 0.33 m/s. C. 0.5 m/s. D. 1.0 m/s.
The concept of Earth’s crust “floating” on the denser underlying mantle:
a. outwash d. cyclothem b. accretion e. interglacial stage c. isostasy
The locations of the major pressure and wind systems on the earth:
A) are fixed by the poles and equator. B) move as they follow the vertical rays of the Sun. C) do not change with the seasons. D) are denoted by parallels of latitude. E) are fixed by astronomy.
The relatively young mountains along the western margins of North and South American plates are referred to as the
A) Cordilleran system. B) Eurasian-Himalayan system. C) Alleghany orogeny. D) Sierra Nevadan orogeny.