What is a disadvantage of using multibeam echo systems to map the entire seafloor?
A) It can only detect a single narrow corridor of the seafloor.
B) There are many beams that radiate from the ship's hull.
C) There are very few vessels that are actually outfitted with these systems.
D) The systems send a pulse of sound every ten seconds.
C
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Locations on Earth which have the largest annual temperature change from summer to winter are often:
A) near an ocean. B) at high latitudes. C) very humid. D) at the equator. E) at low altitudes.
Compressional tectonic forces may result in the formation of ____
a. normal faults b. anticlines and synclines c. horsts and grabens d. strike-slip faults
Drylines may be detected by Doppler radar when insects and insect-eating birds congregate along it. On the radar screen, the echo from insects and birds shows up as a thin line, called a fine line
a. True b. False
A ________ dune is deeply convex and its horns point upwind.
A. longitudinal B. parabolic C. transverse D. barchan E. bajada