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