3. Which of the following is the result of the collision of two oceanic plates?
A trench
C. rift valley
B. volcano
D. fault line
4. What geologic feature produced in the convergence of two continental plates?
A. folded mountains
C. Rift valleys
B. Island arcs
D. Trenches
5. Which of the following can we expect to find at a mid-ocean ridge?
A. relatively young rocks
C. very ancient rocks.
B. reverse fault
D. thick accumulation of sediments
6. Why does the oceanic crust sink beneath the continental crust at then
subduction zone?
A. The oceanic crust has a greater density.
B. The oceanic crust is pulled downward by Earth's magnetic field.
C. The oceanic crust is pushed from the ridge.
D. The continental crust has a denser composition.
7. What happens when two oceanic plates collide?
A. The hot spot will form.
B. The volcano island arc will form.
the edge of a continent will form.