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Plate Tectonics - Seafloor Spreading
Test Description: Review
Instructions: Answer all questions to get your test result.
1) Plates that move away from each other are ______
A
convergent
B
transform
C
divergent
D
subducting
2) Plates that move toward each other are ______
A
divergent
B
sliding
C
transform
D
convergent
3) Plates that slide past each other occur at ___________boundaries
A
subduction
B
divergent
C
convergent
D
transform
4) __________ came up with the theory of Seafloor spreading
A
Marie Tharp
B
Henry Hess
C
Harry Hess
D
Alfred Wegener
5) Pangaea was the name of _______
A
The super continent that existed 400 million years ago
B
The super continent that existed 4 million years ago
C
the super continent that existed 250 million years ago.
D
The super continent that existed 25 million years ago
6) Seafloor spreading occurs at a __________boundary
A
convergent
B
divergent
C
transform
D
none of the above
7) The idea that the earth is divide into plates and are constantly in motion is ____
A
Plate tectonics
B
Continental drift
C
evidence
D
supercontinent
8) Subduction occurs at _______________.
A
midocean ridge
B
divergent boundaries
C
convergent boundaries
D
transform boundaries
9) Convection occurs in the _______.
A
mantle
B
crust
C
inner core
D
outer core
10) The Atlantic ocean basin is __________.
A
getting deeper
B
getting smaller
C
getting wider
D
staying the same size
11) Alfred Wegener could explain how the continents moved
A
False
B
True
12) __________causes seafloor spreading
A
mid-ocean ridges
B
subduction
C
convection
D
trenches
13) What happens when oceanic crust meets oceanic crust at a convergent boundary.
A
younger crust subducts under older crust
B
they spread apart
C
Older crust subducts under younger crust
D
mountains are formed
14) ______was used to locate the mid-ocean ridge
A
divers
B
sonar
C
submarines
15) Why is it difficult to explore the ocean floor?
A
It is cold
B
It is very dark
C
Too much water pressure
D
All of the above
16) subduction is found at ________
A
trenches
B
mid-ocean ridges
C
volcanoes
D
All of the above
17) When continental crust converges ______ are formed
A
rifts
B
trenches
C
subduction
D
mountains
18) Earthquakes occur often at _______boundaries.
A
convergent
B
divergent
C
all of the boundaries
D
transform
19) Subduction occurs when ______
A
mountains are formed
B
oceanic crust slides under continental crust
C
continents collide
D
continental crust slides under oceanic crust
20) The transform boundary found in California is named __________.
A
San Andreas fault
B
Rift valley
C
Mid-ocean ridge
D
California fault
*select an answer for all questions
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