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Earth's Structure
Test Description: Earth's structure and plate tectonics
Instructions: Answer all questions to get your test result.
1) The earth is primarily composed of.....
A
crust
B
rock
C
graham cracker
D
magma
2) About how much of the earth is covered by water?
A
25%
B
80%
C
75%
D
70%
3) What is the thinnest layer of the earth?
A
outer core
B
mantle
C
crust
D
inner core
4) Which layer contains most of the earth's mass?
A
outer core
B
mantle
C
crust
D
inner core
5) What is it called when heat rises and cool sinks?
A
convection current
B
mantle current
C
core current
D
ocean current
6) The only liquid layer is the......
A
crust
B
outer core
C
inner core
D
mantle
7) What is created by the dynamo effect in the inner core?
A
convection current
B
snow
C
tired teachers
D
magnetic field
8) What consists of all the crust as well as the upper, ridged part of the mantle?
A
mesosphere
B
asthenosphere
C
sphere
D
lithosphere
9) What is the theory of continental drift?
A
the hypothesis that the continents once formed a single land mass, broke up, and drifted to their present locations.
B
the hypothesis that the continents once formed a single land mass and are drifting back into that land mass
C
the hypothesis that the continents were once further apart
10) The process of new oceanic crust forming is.....
A
subduction
B
crust spreading
C
rift valley making
D
sea-floor spreading
11) subduction...
A
destroys old crust
B
bakes cakes
C
likes long walks on the beach
D
makes new crust
12) what boundary is formed by collisions of plates?
A
transform
B
divergent
C
convergent
13) what boundary is caused by plates moving away?
A
transform
B
divergent
C
convergent
14) what boundary is created by two plates sliding past each other?
A
convergent
B
transform
C
divergent
15) When a transform boundary happens, what is the effect?
A
volcanoes
B
earthquakes
C
sea-floor spreading
D
rift valleys
16) A force that acts on a rock to change its shape or volume is called....
A
stress
B
anger
C
tension
D
folding
17) stress that pushes rock in opposite directions until it breaks....
A
tension
B
syncline
C
shearing
D
compression
18) fold in a rock that bends upwards is....
A
syncline
B
anticline
19) stress that squeezes rock until it folds or breaks is called....
A
tension
B
hanging wall
C
shearing
D
compression
20) stress that pulls rock until it becomes thinner in the middle or breaks is called...
A
tension
B
compression
C
folding
D
shearing
*select an answer for all questions
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