1. What are the two types of crust?
A. Convergent and Divergent
B. Lithosphere and Asthenosphere
C. Continental and Oceanic
D. Trench and Island Arc

2. What happens at the boundary where a continental plate and an oceanic
plate collide?

A. The two plates are moving
B. Mountains develop on edge of the oceanic plate
C. The continental plate slips under the oceanic plate
D. The oceanic plate is forced down under the continental plate

3. How is subduction zone formed?

A. When two plates slide each past each other
B. When two plates move away from each other
C. When two plates move toward each other.
D. When tectonic plate inks below another

4. Why does the oceanic crust sink beneath the continental crust at a
subduction boundary?

A. The oceanic crust is hotter
B. The oceanic crust has a greater density
C. The oceanic crust has a lighter density
D. The oceanic crust has more magnetic composition

6. What is/are formed when two oceanic plates collide? (Multiple answer)

A. Trench
B. Tsunami
C. Volcanic Island Arc
D. Mountain Ranges

7. What will happen to the leading edge of the subducted denser plate?

A. It will later reach the mantle, causing it to melt and turn into magma
B.it will later reach the mantle and evaporate
C. Volcanic arc will form
D. It will generate a tsunami

8. The formation of Philippine achipelago is the result of the

A. Continental-oceanic convergence
B. Continental-Continental Convergence
C. Oceanic-Oceanic Convergence
D. Oceanic-Continental Convergence

9. How is tsunami formed?

A. When denser plate is subducted

B. When strong earthquakes are generated at the continental plate
C. When strong earthquakes are generated at the ocean floor
D. When continental plate is collided with another continental plate

10. What happens when two continental plate collide?

A. One plate will go under and subducts. B. Both two plates will go downward.
C. Neither the plates will be subducted.
D. Plates will melt later.​