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Plate Tectonics 2022 Flashcards | StudBud
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Plate Tectonics 2022
Plate Tectonics 2022
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Continental Drift and Plate Tectonic Theories
Flashcards
30 cards
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Practice quiz
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Host live
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Questions
30
Answers
1
When continental and oceanic crust meet, which one "wins"?
continental
both
neither
oceanic
2
What is subduction?
when convection happens in the asthenosphere
Soft rock from underneath the plates rose & hardened
when plate move apart
when one plate is pushed beneath another
3
At an oceanic-oceanic divergent boundary, the oldest crust is where?
at the mid-oceanic ridge (boundary)
the crust is all the same age
scientists are not sure
at the far edges of the oceanic crust
4
Why was continental drift theory originally rejected?
there was no evidence
Wegener was not a scientist
couldn't explain mechanism
the evidence was wrong
5
What evidence was NOT used to indicate that seafloor spreading was happening at mid-oceanic ridges?
glacier markings
sonar maps of ocean floor
age of the seafloor
mid-ocean ridges
6
Oceanic crust is ____________ than continental crust.
Thinner and less dense
Thinner and more dense
Thicker and more dense
Thicker and less dense
7
In which layer is convection occurring?
Mesosphere
Asthenosphere
Inner Core
Lithosphere
8
At which boundary is new crust created?
Transform
Convergent
Normal
Divergent
9
When seafloor spreading was discovered, it told us what?
the outer core was a liquid
it didn't give any new information
convection was moving the plates
the earth had a magnetic field
10
What did Seafloor Spreading tell us about the Earth?
the Earth is older than we thought
Earth was once in a supercontinent
convection was moving plates
the Earth is younger than we thought
11
What type of boundary creates the deepest trenches?
All Divergent
Transform
Convergent - continental-continental
Convergent - oceanic -oceanic
12
What type of boundary is closest to where we live (Western Oregon)?
divergent
stationary
convergent
transform
13
What analogy is best for plate tectonics?
a car speeding on a road
icing on top of a cake
cake in an oven
surfboard on the ocean
14
What type of boundary only has only earthquakes and no volcanoes, trenches or mountains?
Transform
all of these answers are correct
Divergent
Convergent
15
Fossils of the same species have been found on different continents because...
plates were together then diverged slowly
plates were together and diverged quickly
plates converged slowly
plates converged quickly
16
Continental Drift Theory included all EXCEPT...
Convection
Evidence
Pangaea
Continents
17
Which layer of Earth is broken into tectonic plates?
Outer Core
Inner Core
Mesosphere
Lithosphere
18
Plates have either continental or oceanic crust, not both.
False
True
19
Boundary where plates are moving towards each other is called...
divergent
normal
tranform
convergent
20
When two continental plates collide what happens?
many volcanoes are formed
deep trenches are formed
tall mountain ranges are formed
none of these answers make sense
21
Earth's plates move on top of what?
ocean water
None of these answers are correct
asthenosphere
sediments and soil
22
Seafloor spreading happens at what boundary?
Divergent
Transform
It is not a plate boundary
Convergent
23
What did Plate Tectonic Theory have that Continental Drift did not?
Continents move
Evidence for Pangaea
Rejection from the scientific community
The Earth's crust is broken into plates
24
Convection happens because of changes in all of the following except...
location of the magma
temperature
color
density
25
This unifying theory of Earth Science that generally states that the crust is broken into plates that move over time.
Continental Drift
Plate Tectonics
Seafloor Spreading
Nature of Science
26
At what boundary is one plate subducted?
Divergent
Convergent
Transform
Rift Valley
27
What boundary is repsonsible for producing earthquakes?
divergent
convergetn
transform
all of the above
28
As matter gets hotter (temperature increases) what else happens?
Matter gets more dense and rises
Matter gets less dense and rises
Matter gets less dense sinks
Matter gets more dense and sinks
29
Which of the following was NOT evidence for Continental Drift Theory?
glacier scrapings
measurements of the rate of movement
fossils of plants and animals
rock layers
30
Plates are melted back into the asthenosphere where?
Plates are not melted into the asthenosophere
On the seafloor
subduction zones
divergent boundaries
