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Plate Tectonics Flashcards | StudBud
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Plate Tectonics
Plate Tectonics
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#middle school #earthscience #North Polk
Flashcards
25 cards
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Practice quiz
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Questions
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Answers
1
Which type of crust is thicker?
oceanic crust
continental crust
2
If an object is more dense than everything around it, then....
nothing will happen
it will rise and float
it will sink
3
How many tectonic plates do scientists believe there are on Earth?
15
20
10
5
4
What is formed at a convergent oceanic to continental plate boundary?
volcanoes
deep-ocean trenches
rift valleys
mid-ocean ridges
5
The process of oceanic crust sinking underneath continental crust is called
subduction
convection
mid-ocean ridge
submarine
6
What is formed at a divergent oceanic to oceanic plate boundary?
deep-ocean trenches
volcanoes
rift valleys
mid-ocean ridges
7
What is formed at a convergent continent to continent plate boundary?
deep-ocean trenches
rift valleys
volcanoes
mountains
8
Convection currents within the Earth's mantle
is the force that move the continents
are caused by earthquakes
are the result of aliens
is what causes plates to stop moving
9
Which type of crust is denser?
continental crust
oceanic crust
10
Transform plates move...
apart from each other
past each other
towards each other
underneath each other
11
Convergent plates move...
underneath each other
towards each other
past each other
apart from each other
12
Which force causes plate motion?
ridge push
basal drag
slab pull
all the above
13
T or F: The seafloor is the oldest at mid-ocean ridges.
True
False
14
The part of earth below the mantle
core
mantle
crust
15
What is formed at a divergent continent to continent plate boundary?
rift valleys
mountains
deep-ocean trenches
volcanoes
16
A block of lithosphere that consists of crust and the rigid outermost part of the mantle is...
a shell
a plate
a block
a cookie
17
What is the plastic-like layer in Earth?
crust
core
asthenosphere
lithosphere
18
The theory that states that the continents are slowly moving
Plate Tectonics
Seafloor Spreading
Continental Drift
19
The theory that states Earth is covered in slabs of crust called plates that constantly move
Seafloor Spreading
Continental Drift
Plate Tectonics
20
Divergent plates move...
underneath each other
past each other
apart from each other
towards each other
21
Which type of plate boundary creates frequent earthquakes but no volcanic activity?
divergent
transform
convergent
22
What is a "release of energy" at/near plate boundaries called?
earth spasm
volcano
earthquack
earthquake
23
Transform plate boundary between the Pacific plate and North American plate.
the Himalayas
the East African Rift
San Andreas Fault
the Hawaiian Islands
24
T or F: Oceanic crust sinking down into the earth will create ocean trenches.
True
False
25
The theory that states the oceans are spreading at mid-ocean ridges.
Seafloor Spreading
Continental Drift
Plate Tectonics
