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Plate Tectonics
Plate Tectonics
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Plate Tectonic review for the test #9thgradeearthscience
Flashcards
25 cards
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Questions
25
Answers
1
Which type of boundary produces a volcanic arc island?
divergent
continental-continental convergent
oceanic-continental convergent
oceanic-oceanic convergent
2
Where could you go to walk between two plates?
California
Iceland
Washington
Alaska
3
Which type of plate boundary is shown in the picture?
Convergent
Transform
Divergent
4
What happens to the sea floor as you move away from the mid-ocean ridge?
Nothing
It gets older
It gets younger
It gets more magnetic
5
Why wasn't Alfred Wegener's theory of continental drift accepted in his time?
He didn't have any evidence
He didn't know how to conduct a good experiment
He based his ideas off of bad science
He couldn't explain how the plates moved
6
The Pacific ring of fire is where plates are _____
scraping past each other
converging
diverging
not moving
7
What is it called when one plate gets pulled underneath another plate?
Seduction
Sinkification
Subduction
Seclusion
8
Who proposed the theory of continental drift?
Alfred Wegener
Bill Nye
George Lucas
Harry Hess
9
What evidence did Harry Hess add to our current theory of plate tectonics?
sea-floor spreading
continents fitting together like a puzzle
fossils found on distant continents
mountain ranges continue on distant continents
10
Which type of plate boundaries form ocean trenches?
All boundaries
Convergent
Transform
Divergent
11
In the picture, which way will the plates move because of convection?
Up
Down
Away from each other
Toward each other
12
Which type of boundaries produce the greatest number of earthquakes?
divergent
transform
convergent
13
Which type of boundary is shown in the picture?
Continental-continental
Divergent
Oceanic-Continental
Oceanic-oceanic
14
At which plate boundaries do volcanoes occur?
Divergent
Transform
Convergent
Both divergent and convergent
15
Where do rift valleys form?
at subduction zones
at divergent plate boundaries
at transform plate boundaries
at convergent plate boundaries
16
Which plate boundaries have BOTH volcanoes and earthquakes there?
Transform
Divergent and convergent
Divergent
Convergent
17
Who discovered sea floor spreading?
Harry Hess
Bill Nye
Bill Gates
Alfred Wegener
18
At which type of plate boundary does seafloor spreading happen?
all boundaries
divergent
transform
convergent
19
Which type of plate boundaries grind past each other?
divergent
convergent
all boundaries
transform
20
The grey stripes are are show a normal magnetic pattern, what do the white stripes represent?
normal magnetism in basalt crust
normal magnetism in granite crust
magnetic reversals in granite crust
magnetic reversals in basalt crust
21
True or false: Earth's magnetic field has gone through many reversals over time
False
True
22
How did scientists find the mid-Atlantic ridge?
Boats- while they were deep sea diving
Radar- when they were studying the atmosphere
Satellites- when they were mapping earth
Sonar- when they were mapping the seafloor
23
Why do the plates move?
Convection currents in the mantle
Subduction of the crust
Convection currents in the crust
Radiation from the sun
24
At which plate boundaries do subduction zones occur?
divergent
convergent
transform
25
At which plate boundaries do Earthquakes occur?
All boundaries
Divergent
Transform
Convergent
