Most oceanic islands and seamounts are
A) small pieces rifted apart from continents.
B) places where the seafloor has been buckled upward by convergence.
C) constructed by volcanic eruptions that first occur under water.
D) large fan-shaped mounds deposited by turbidity currents.
C) constructed by volcanic eruptions that first occur under water.
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Which of the following acts as a barrier to diffusion of ideas and/or cultural traits?
A. man-made laws B. the earth's topography C. distance D. all of these
What is the minimum depth at which subduction zone metamorphism will occur?
A) 0 km B) 30 km C) 25 km D) 13 km
The troposphere extends from the Earth up to about _______________ km
Fill in the blank with correct word.
Using the arrival times in this image, determine the S-minus-P interval for this earthquake
A) 6.0 minutes B) 4.1 minutes C) 10.1 minutes D) 3.7 minutes