Which hypothesis best explains the continuous bend in the Hawaiian Islands-Emperor Seamount chain?
a) The trench associated with the formation of this feature has a continuous bend in it.
b) This feature results from two independent mantle plumes that merged to create the appearance of a bend.
c) The direction of plate motion shifted over time over a stationary mantle plume (hot spot).
d) The location of the mantle plume that formed this feature drifted over time.
e) The mid-ocean ridge that forms this feature has a continuous bend in it.
c) The direction of plate motion shifted over time over a stationary mantle plume (hot spot).
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If a freely falling object were somehow equipped with a speedometer, its speed reading would increase each second by about
A) 5 m/s. B) 10 m/s. C) 15 m/s. D) a variable amount E) depends on its initial speed
One-fifth of Earth's total fresh water supply is in ________
A) the ocean B) groundwater C) ponds D) the tundra E) estuaries
When wine turns sour it is the result of the conversion of ethanol, C2H5OH, to acetic acid, HC2H3O2. Which of the following happens to ethanol in this reaction?
A) It is reduced. B) It is oxidized. C) It is both oxidized and reduced. D) It is neither oxidized nor reduced.
Which of the following types of vegetation is most likely to be found in Costa Rica?
A) Tundra B) Tropical forest C) Coniferous forest D) Tropical Savanna E) Desert