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1. The type of plate boundary where two plates come together is a
a. Convergent boundary
c. transform boundary
b. divergent boundary
d. plate boundary

2. Which plate undergoes subduction at oceanic-continental convergent plate boundaries? Why?
A. The oceanic plate. It is denser than the continental plate.
b. The oceanic plate. It is less dense than the continental plate.
C. The continental plate. It is denser than the oceanic plate.
d. The continental plate. It is less dense than the oceanic plate.

3. Which of the following is a defining feature of an oceanic plate?
A.Being covered by oceans
b. Being mostly above sea level
C.Being composed mostly of basalt and other mafic rocks
d. Being composed mostly of granite and other felsic rocks

4. When an oceanic and a continental plate meet, a is formed on the oceanic side, and are formed on the continental side.
a. Mountain; trenches
C. volcano; trenches
b. trench; more trenches
d. trench; volcanoes and mountains

5. Which of the following describes a convergent boundary?
a. Where two plates move toward and collide with one another
b. Where two plates interact in any way
c. When two plates slide along each other
d. When two plates move apart from each other

6. Why does the oceanic crust sink beneath the continental crust at the subduction zone?
a. The oceanic crust has a greater density
b. The oceanic crust is pushed from the ridge
C. The continental crust has a denser composition
d. The continental crust is pulled downward by Earth's magnetic field

7. Partial melting and the production of magma takes place at d
a. Divergent plate boundaries
b. Ocean-ocean convergent plate boundaries
C. Ocean-continent plate boundaries
d. Continent-continent plate boundaries
8. A convergence when the leading edges of two colliding plates are both oceanic crust is called
a. Oceanic - oceanic
C. continental - continental
b. Oceanic - continental
d. convergent - divergent

9. Shearing stresses and shallow earthquakes are associated with
a. Subduction zones
c. Spreading centers
b. Continent/continent convergence
d. Transform boundaries

10. A tsunami forms when the epicenter of an earthquake is on the floor. .
a. Convergent
b. volcanic
c. oceanic
d. desert

11. Which feature is common to and only found in diverging regions?
a. Trenches
b. rift valleys
C. volcanic arcs
d. island arcs ​