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