EarthSci

What are the two types of crust?

• Convergent and Divergent

• Lithosphere and Asthenosphere

• Continental and Oceanic

• Trench and Island Arc

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

• The two plates are moving

• Mountains develop on edge of the oceanic plate

• The continental plate slips under the oceanic plate

• The oceanic plate is forced down under the continental plate

How is subduction zone formed?

• When two plates slide each past each other

• When two plates move away from each other

• When two plates move toward each other

• When one tectonic plate sinks below another

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

• The oceanic crust is hotter

• The oceanic crust has a greater density

• The oceanic crust has a lighter density

• The oceanic crust has more magnetic composition

This trench is located in the western Pacific Ocean and it was said to be the deepest natural trench in the world.

• Philippine Trench

• Mariana Trench

• Pacific Trench

• Atlantic Trench

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

• Trench

• Tsunami

• Volcanic Island Arc

• Mountain Ranges

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

• It will later reach the mantle, causing it to melt and turn into magma

• It will later reach the mantle and evaporate

• Volcanic arc will form

• It will generate a tsunami

The formation of Philippine achipelago is the result of the ___________?

• Continental-oceanic convergence

• Continental-Continental Convergence

• Oceanic-Oceanic Convergence

• Oceanic-Continental Convergence

How is tsunami formed?

• When denser plate is subducted

• When strong earthquakes are generated at the continental plate

• When strong earthquakes are generated at the ocean floor

• When continental plate is collided with another continental plate

What happens when two continental plate collide?

• One plate will go under and subducts.

• Both two plates will go downward.

• Neither the plates will be subducted.

• Plates will melt later.