What is the difference between an active continental margin and a passive continental margin?
A) A passive margin is the site of an ancient continental rift, left behind when seafloor spreading moved offshore, whereas an active margin is an active plate boundary.
B) An active margin receives large amounts of sediment whereas a passive margin is sediment starved.
C) An active margin has earthquakes whereas a passive margin has quiet erupting (aka passive) volcanos.
D) A passive margin is passively carried along by plate tectonics in a transform system, like the San Andreas whereas an active margin is a trench.
A
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What evidence shown on the map indicates that this type of boundary is present?
After drawing in the plate boundaries using the appropriate symbols on the tectonic map below, answer the question above. When asked to cite evidence to support your answers, only cite evidence that you can see on this map.
Scale: 1 cm = 300 km 11 inch = 500 miles2
Despite their instability, over 70 barrier islands off the United States have been commercially
developed. Indicate whether the statement is true or false.
Large earthquakes almost always produce new faults because the old faults tend to "heal" in the long time that separates most large earthquakes
Indicate whether the statement is true or false
A(n) ________ -shaped valley (in cross section) is characteristic of glacial erosion.
A. U B. V C. S D. I E. Y