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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
subducting
C
divergent
D
transform
2) Plates that move toward each other are ______
A
sliding
B
divergent
C
transform
D
convergent
3) Plates that slide past each other occur at ___________boundaries
A
convergent
B
transform
C
divergent
D
subduction
4) __________ came up with the theory of Seafloor spreading
A
Alfred Wegener
B
Harry Hess
C
Henry Hess
D
Marie Tharp
5) Pangaea was the name of _______
A
The super continent that existed 4 million years ago
B
the super continent that existed 250 million years ago.
C
The super continent that existed 400 million years ago
D
The super continent that existed 25 million years ago
6) Seafloor spreading occurs at a __________boundary
A
convergent
B
transform
C
divergent
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
supercontinent
D
evidence
8) Subduction occurs at _______________.
A
transform boundaries
B
divergent boundaries
C
convergent boundaries
D
midocean ridge
9) Convection occurs in the _______.
A
mantle
B
outer core
C
crust
D
inner core
10) The Atlantic ocean basin is __________.
A
getting smaller
B
getting wider
C
staying the same size
D
getting deeper
11) Alfred Wegener could explain how the continents moved
A
True
B
False
12) __________causes seafloor spreading
A
convection
B
subduction
C
mid-ocean ridges
D
trenches
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
divers
B
submarines
C
sonar
15) Why is it difficult to explore the ocean floor?
A
It is very dark
B
All of the above
C
Too much water pressure
D
It is cold
16) subduction is found at ________
A
volcanoes
B
mid-ocean ridges
C
trenches
D
All of the above
17) When continental crust converges ______ are formed
A
trenches
B
rifts
C
mountains
D
subduction
18) Earthquakes occur often at _______boundaries.
A
transform
B
divergent
C
convergent
D
all of the boundaries
19) Subduction occurs when ______
A
continents collide
B
oceanic crust slides under continental crust
C
continental crust slides under oceanic crust
D
mountains are formed
20) The transform boundary found in California is named __________.
A
Rift valley
B
Mid-ocean ridge
C
California fault
D
San Andreas fault
*select an answer for all questions
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