Seafloor Spreading Question Preview (ID: 53964)


Seafloors Spreading. TEACHERS: click here for quick copy question ID numbers.

What is Sea-Floor Spreading?
a) Mid-Ocean ridges continually add new material to the ocean floor
b) A thing in the Ocean
c) Subduction zones continually add new material to the ocean floor.
d)

Mid-Ocean ridges form long chains of ______ that rise up from the ocean floor.
a) Rivers
b) Mountains
c) Valleys
d)

In the Mid-1900s, scientists mapped mid-ocean ridges using what?
a) x rays
b) Satillites
c) Sonar
d)

What is Subduction?
a) The cycling of magma material in the mantel
b) The process by which the ocean floor sinks beneath a deep ocean trench and back into the mantle again.
c) The process by wich new ocean floor is created.
d)

Who came up with the theory of Seafloor Spreading?
a) Wegener
b) Hess
c) Wilson
d) Tharp

Who mapped the mid-ocean ridge?
a) Wegener
b) Hess
c) Wilson
d) Tharp

Where are the yongest rocks on the ocean floor located?
a) Near the mid ocean ridge
b) Near the subduction zones
c)
d)

What type of plate boundary is located at the mid-ocean ridge?
a) Divergent
b) Convergent
c) Transform
d)

What type of plate boundary is located at subduction zone?
a) Divergent
b) Convergent
c) Transform
d)

What is the name of the research vessel that helped prove continental drift and seafloor spreading?
a) Grogu
b) Glossipteris
c) Glomar Challenger
d) Glomarantic

Which of the following is NOT a piece of evidence that supports seafloor spreading?
a) Mid Ocean Ridge
b) Puzzle Like fit of the continents
c) Magnetic Reversals (Polarity)
d) Age of the rocks on the ocean floor

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