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Plate Tectonics Flashcards | StudBud
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Plate Tectonics
The movement of plate tectonics is thought to be caused by
Which crust is younger?
Plate Tectonics
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Answers
1
Which crust is younger?
Continental- it is not as dense
Oceanic- because it is thin
Oceanic- it is made from new magma
Continental- because it hasn't been compacted
2
The movement of plate tectonics is thought to be caused by
Earthquake vibrations
Volcano pressure
Hot spots growing
Convection currents
3
Which is the inner most layer of the earth?
Outer core
Inner Core
Mesosphere
Asthenosphere
4
Who is credited with the Theory of Continental Drift?
Einstein
Marie Currie
Wegner
Edison
5
What evidence shows us that Africa and South America were once connected?
All of the above
Matching fossils were found on both
Rock and minerals matched on both
The coastlines fit together like a puzzle
6
The layer of rock between the Earth's crust and core.
Lithosphere
Crust
Inner Core
Mantle
7
New magma rises and fills in the gap at a mid ocean ridge
Continental Drift Theory
Crust
Core
Sea Floor Spreading
8
1858: Scientists point out that same fossils are found in multiple continent- is it evidence?
no
yes
9
Why didn't people believe Wegener's idea of continental drift?
The people already discovered plate tectonics
They already knew the continents move
Wegener was known to tell fibs
The rocks seemed too strong
10
When new oceanic crust forms as magma rises to the surface and hardens into rock.
Sea floor spreading
Layers of Earth
Continental Drift
Wegner
11
Which layer is made mostly of liquid iron?
Mantle
Inner core
Crust
Outer core
12
How do tectonic plates fit together
Like a tetris game
Like a jigsaw puzzle
Like a brainteaser
Like two peas in a pod
13
Where does the energy come from to move the tectonic plates?
Convection heat from within the Earth
Heat from my furnace
Batteries
Hydropower
14
What does the theory of continental drift explain?
Why continents move
How oceans formed
The layers of the earth
That continents move
15
The supercontinent in Wagner's theory before it broke up into today's continents.
Antarctica
Pangaea
Panthalasa
North America
16
The central part of the Earth below the mantle. Liquid outer, solid inner.
Mantle
Asthenosphere
Core
Crust
17
The thin, solid, outermost layer of the Earth above the mantle.
Core
Crust
Mantle
Atmosphere
18
The observation that the continents fit together like puzzle pieces and were once connected
Shape matching of continents
Continental drift
Continental plowing
Wandering continents
19
How might continental drift change the Earth in the future?
The continents will stay in the same spot and not move
The continents will disappear
The continents will move and become a new large landmass
The continents will go back to Pangaea
