A large dune type is the ________ (or seif) dune, which forms a ridge parallel to prevailing wind direction.
A. longitudinal
B. barchan
C. parabolic
D. moon
E. transverse
Answer: A
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Electrons move in an electrical circuit
A) by being bumped by other electrons. B) by colliding with molecules. C) by interacting with an established electric field. D) because the wires are so thin. E) none of the above
Scientists think that turbidity currents contribute to the formation of submarine canyons
Indicate whether the statement is true or false
Faults that penetrate the surface may show a ____
A)fault scarp B)graben C)horst D)fault block E)fault breccia
What effect will roots have on a sedimentary rock?
A) Root tips will promote cementation, making the rock stronger. B) Roots will weaken the cement, splitting the rock apart. C) Roots will wrap around the sediments, holding them tight as the rock cements. D) Roots will add cement to unconsolidated sediments to create a rock.