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Seafloor Spreading
Test Description: Seafloors Spreading
Instructions: Answer all questions to get your test result.
1) What is Sea-Floor Spreading?
A
Subduction zones continually add new material to the ocean floor.
B
A thing in the Ocean
C
Mid-Ocean ridges continually add new material to the ocean floor
2) Mid-Ocean ridges form long chains of ______ that rise up from the ocean floor.
A
Rivers
B
Valleys
C
Mountains
3) In the Mid-1900s, scientists mapped mid-ocean ridges using what?
A
Satillites
B
x rays
C
Sonar
4) What is Subduction?
A
The process by which the ocean floor sinks beneath a deep ocean trench and back into the mantle again.
B
The cycling of magma material in the mantel
C
The process by wich new ocean floor is created.
5) Who came up with the theory of Seafloor Spreading?
A
Hess
B
Wegener
C
Wilson
D
Tharp
6) Who mapped the mid-ocean ridge?
A
Wegener
B
Tharp
C
Hess
D
Wilson
7) Where are the yongest rocks on the ocean floor located?
A
Near the mid ocean ridge
B
Near the subduction zones
8) What type of plate boundary is located at the mid-ocean ridge?
A
Divergent
B
Convergent
C
Transform
9) What type of plate boundary is located at subduction zone?
A
Transform
B
Convergent
C
Divergent
10) What is the name of the research vessel that helped prove continental drift and seafloor spreading?
A
Glomar Challenger
B
Grogu
C
Glomarantic
D
Glossipteris
11) Which of the following is NOT a piece of evidence that supports seafloor spreading?
A
Magnetic Reversals (Polarity)
B
Puzzle Like fit of the continents
C
Mid Ocean Ridge
D
Age of the rocks on the ocean floor
*select an answer for all questions
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