Which explanation best describes how oceanic crust is formed?
A) Continental crust is swallowed by the sea at subduction zones.
B) Oceanic crust is extracted from the mantle by partial melting and crystallization.
C) Oceanic crust crystallizes in the core and is pushed up through volcanic pipes.
D) Oceanic crust formed when magma ocean cooled and has remained unchanged except around plate boundaries and at hot spots.
Answer: B
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When driving on a foggy night, it is often difficult to see the road when the high beam lights are on. Which of the following processes explains why this happens?
A. transmission of light by the fog B. absorption of light by the fog C. refraction of light by the fog D. scattering of light by the fog
Geostrophic flow occurs when the Coriolis deflection is balanced by an opposite gravitational flow.
Answer the following statement true (T) or false (F)
Thinking of a glacier as a dynamic equilibrium, the input is ______ and the output is _____________.
Fill in the blank(s) with the appropriate word(s).
From this graph, one should conclude that
A) most of the energy input into the system goes toward changing temperature, not changing state.
B) most of the energy input into the system goes toward a more ordered, rigid, molecular structure.
C) none of these options are correct.
D) most of the energy input into the system goes toward changing state, not changing temperature.