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Earth Science
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Plate Tectonics
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
What happens when two continental plates meet?
the plates are the same density so they form mountains
new ocean floor is created
The plates start to move apart from each other
the plates bend and crumple over time
2
How do earth's plates move?
On a layer of completely melted rock.
They float on water
On a layer of softened very hot rock.
Hamsters running on wheels below plates
3
What features do you find at hotspots?
extinct and active volcanoes
rift valleys
trenches
new ocean floor and mid ocean ridges
4
What type of boundary is shown here?
oceanic-oceanic subduction
continental collision
transform
oceanic-continental subduction
5
What features are found at an oceanic-oceanic convergent subduction boundaries?
earthquakes
islands
volcanoes
trenches
6
Where in the rock cycle does rock become heated and less dense and begins to rise?
3
1
4
5
7
Which word describes a thick consistency?
viscous
malleable
subduction
mantle
8
What type of plate boundary is this?
oceanic-oceanic subduction
oceanic-continental subduction
continental collision
transform
9
What was Wegener's evidence that Pangaea once existed?
fit of continents and matching rock sequences
trenches and seafloor spreading
plant and animal fossil evidence
glacial evidence and Antarctica climate changes
10
Where is rock returning to the mantle?
D
B
A
C
11
What kind of feature is shown here?
rift valley
trench
mid ocean ridge
hot spot
12
What moves at a hot spot?
the plate
the hotspot
neither
both
13
Where does heat from inside earth come from?
left over heat from the creation of earth
unicorns
radioactive decay of elements in the core
friction between the outer and inner core
14
Identify the following boundary
continental subduction
divergent in ocean
divergent on land
continental collision
15
What features are present at a divergent plate boundary on land?
trenches
rift valley
eventually new ocean floor
islands
16
Where do we find the highest concentrations of volcanoes and earthquake?
near coastlines
on the edges of plates
volcanoes and earthquakes do not occur
in the middle of plates
17
What causes plates to move?
malleable
density
convection
magic
18
What is true about earth's plates?
They have been moving since Earth began and still move today
They fit together like a puzzle
They cover the planet
They are different sizes and shapes
19
What is found at every plate boundary type?
earthquakes
trenches
mountains
volcanoes
20
Where is new ocean floor created?
2
6
3
5
