Oceanic island arcs are similar to continental volcanic arcs in that ________
A) oceanic islands arcs form by the same mechanism as continental arcs
B) continental arcs make islands that are arc-shaped
C) major continental mountain ranges formed from island arcs
D) oceanic island arcs form on continents when oceanic lithosphere is subducted
A
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Continental crust differs from oceanic crust in that it
A. is denser than oceanic crust. B. is thinner than oceanic crust. C. contains more light minerals than oceanic crust. D. has a composition more like that of the mantle.
Why is the atmosphere such a convenient medium for disposal of wastes?
A) The atmosphere is very dynamic, so it readily dilutes and transports wastes from their sources. B) Reactions in the atmosphere readily break down most pollutants. C) The atmosphere is largely unused by humans, so is a good medium in which to dispose of wastes. D) The atmosphere adapts to increased pollution emissions, so has been able to keep pace with industrialization and urbanization.
Describe the different methods of heat transfer
What will be an ideal response?
Which of the following is TRUE for the June Solstice?
A) The subsolar point is at the Tropic of Capricorn (23.5° S). B) The Antarctic Circle is completely within the circle of illumination. C) The subsolar point is at the equator. D) The Arctic Circle is completely within the circle of illumination.