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Plate Tectonics 8th Grade Flashcards | StudBud
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Plate Tectonics 8th Grade
Plate Tectonics 8th Grade
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Test review for TEKs 8.9A and 8.9B
Flashcards
25 cards
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Questions
25
Answers
1
Why was Wegener's Continental Drift theory rejected by scientists in the early 1900s?
Wegener could not explain how the continents moved.
Wegener was a stupid stupid man.
Wegener had no evidence.
The other scientists did not understand it.
2
What forms at Transform Boundaries?
Trenches
Mountains
Ridges
Earthquakes
3
Which one of the following statements is
NOT
evidence supporting Continental Drift?
Rock layers and formations line up on matching coastlines
Seafloor Spreading where older rock is found far from ridge
Continental coastlines fit together like puzzle pieces
Fossils of same animals found on different continents
4
What forms at Divergent Boundaries?
Trenches
Mountains
Earthquakes
Ridges
5
With Sea Floor Spreading where are the youngest rocks found?
in the opening.
Furthest from the opening
Closest along the edges of the opening
At the ends of the opening
6
What forms at Convergent Boundaries?
Earthquakes
Ridges
Mountains
Trenches
7
Crust is ____________ at convergent boundaries with continent to oceanic plate collisions
Niether created or destroyed
Destroyed
Created
8
Sea floor spreading is causing
the Atlantic ocean gets hotter & the Pacific Ocean cooler
the Pacific ocean gets larger & the Atlantic Ocean to shrink
the Atlantic ocean gets larger & the Pacific Ocean to shrink
the Atlantic & Pacific ocean stay the same size
9
The layer of the Earth identified with the number 1 in the picture is:
Outer Core
Asthenosphere/Mantle
Inner Core
Lithosphere/crust
10
What is Seafloor Spreading?
when the oceans get larger
plates coming together to form trenches
occurs @ ridges where new crust forms & graduallymoves away
the gradual erosion of water forming canyons
11
Who discovered Sea Floor Spreading?
Alfred Wegener
Arthur Holmes
Harry Hess
Poseidon
12
The name of the Super-continent which all of the contents once formed is
Pacifica
Gondwana
Pangaea
Laurasia
13
Subduction is when:
2 plates diverge & denser plate slides under lighter plate
2 plates converge & lighter plate slides under denser plate
2 plates diverge & lighter plate slides under denser plate
2 plates converge & denser plate slides under lighter plate
14
A volcanic Hot Spot occurs where two plates meet?
True
False
15
What are the two main types of crust?
Land and sea
continents and sea
Continental and oceanic
Land and islands
16
The layer of the Earth identified with the number 2 in the picture is:
Outer Core
Inner Core
Asthenosphere/Mantle
Lithosphere/crust
17
What is the result of seafloor spreading?
ridges
trenches
volcanoes
mountains
18
Crust is ____________ at transform boundaries.
Destroyed
Created
Niether created or destroyed
19
What are magnetic reversals?
The magnetic field stops working
The magnetic field changes & the north pole is the south
The rocks switch places in the magnetic field
The magnetic field weakens
20
Crust is ____________ at divergent boundaries,
Niether created or destroyed
Created
Destroyed
21
Which of the following would NOT form/occur at
Continental to Oceanic
convergent boundaries?
Mountains
Ridges
Trench
Volcanoes
22
Crust is ____________ at convergent boundaries with continent to continent collisions
Created
Niether created or destroyed
Destroyed
23
The layer of the Earth identified with the number 4 in the picture is:
Inner Core
Lithosphere/crust
Outer Core
Asthenosphere/Mantle
24
The layer of the Earth identified with the number 3 in the picture is:
Inner Core
Outer Core
Lithosphere/crust
Asthenosphere/Mantle
25
What forms at
Continental to Oceanic
convergent boundaries?
Tsunamis
Mountains
Volcanic Mountains
Ridges
