1.)a.)Which formed as a result of continental convergence: the San Andreas fault
ID: 637417 • Letter: 1
Question
1.)a.)Which formed as a result of continental convergence:
the San Andreas fault
Mt. St. Helens
all of the above
the mid-ocean ridge
The Himalayan Mountain range
b.) The Hawaiian Islands are the result of a
continental-continental divergent boundary
subduction zone
hot spot
ocean-ocean divergent boundary
transform boundary
c.) Which of the following characterizes a passive continental margin:
active mountain building
none of the above
deep-focus earthquakes
ocean trenches
explosive volcanism
d.) Oceanic crust contains less ____________ than continental crust.
silicon and iron
iron and magnesium
none of the above
silicon and aluminum
iron and aluminum
e.) Approximately how tall is the mid-ocean ridge above the sea floor:
200-300 km
10-20 km
2-3 km
200,000 km
Explanation / Answer
1) The Himalayan Mountain range is the correct answer.
when two continental plates pushes each other and neither can push the other beneath it, then these surfaces extrudes or buckles upward and give the shape of mountains this phenomenon takes place in long period of time. and the himalayas are the result of these continental convergence of eurasian plate and the indian plate. moreover san andreas is not a convergent instead it is transform fault.
2) The Hawaiian Islands are the result of hot spots.
3) none of the above.
there are two types of continental margins active and passive continental margins and active margins are the sites of tectonic activity such as active mountain building, extreme volcanism, earthquakes and oceanic trench so none of the above are correct. as none are under passive margin.
4) Oceanic crust contains less iron and magnesium than continental crust.
5) 2-3 km
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