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