Explain how the continents have separated overtime, beginning with Pangea.

Pangea, Gondwana and Laurasia, Laurasia -Eurasia and N. America, Gondwana - Antarctica, Australia, S. America, and Africa.

process whereby rock layers are raised to higherelevations

What is the mesosphere?

dense layer; part of the mantle

What is the role of the asthenosphere in themovement of the tectonic plates? (2 answers)

tectonic plates float, or move very slowly ontop, asthenosphere is a layer made of solid rock thatflows slowly

What is the inner core?

solid, dense center of our planet

What is the asthenosphere?

part of the Earth’s mantle where the lithosphere floats

What are plate tectonics?

explains how tectonic plates move and change shape

What is continental drift?

theory describing the movement of the Earth’scontinents

the sinking of layers of Earth’scrust to lower elevations

What is sea-floor spreading?

process that takes place at mid-ocean ridges

How do folded mountain ranges form? (two answers)

when two tectonic plates with continental crust collide., crust moves upward at collision, forming mountains

What is the outer core?

the liquid layer at the Earth’s center

How does position of hanging wall relative to theposition of a footwall tell us about stress? 2

rocks are pushed together by compression,hanging walls push, When rocks are pulled apart by tension, hangingwalls slip

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Plate Tectonics

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Questions 21

Answers

1
If you could drill through Earth’s crust, which layer would it be best to drill through?
continental
crust
oceanic
core
2
Explain how the continents have separated overtime, beginning with Pangea.
Pangea, Gondwana and Laurasia
Laurasia -Eurasia and N. America
Pangea split into Gondwana
Gondwana - Antarctica, Australia, S. America, and Africa.
3
What is uplift?
process whereby rock layers are raised to higherelevations
process by which continents are heated
process by which tectonic plates collide
process whereby rock layers are raised to lower elevations
4
What is the mesosphere?
dense layer; part of the core
the layer of air around the Earth
dense layer; part of the mantle
flimsy layer; part of the mantle
5
What is the role of the asthenosphere in themovement of the tectonic plates? (2 answers)
tectonic plates float, or move very slowly ontop
asthenosphere is layer made of solid rock thatflows quickly
tectonic plates crumble
asthenosphere is a layer made of solid rock thatflows slowly
6
Can the movement of tectonic plates affectcommunicates living near a transform boundary?
Yes, causes earthquakes
No, the Earth absorbs the motion
Yes, causes tornadoes
No, you wouldn't notice
7
What does the fact that the same fossils arefound on both sides of the ocean evidence of?
intelligent life from other planets
tectonic plates
earthquakes
continental drift
8
What are deep cracks that formbetween two tectonic plates that pull away form each other?
mono plates
tectonic crashes
resistance plates
rift zones
9
What is the inner core?
solid, dense center of our planet
solid, dense outside of our planet
airy, fluffy center of our planet
solid, lightweight center of our planet
10
What is the asthenosphere?
part of the Earth’s core where the lithosphere floats
part of the Earth’s mantle where the inner core floats
part of the Earth’s mantle where the lithosphere floats
part of the Earth’s mantle where the lithosphere sinks
11
Mountains formed by magma that reaches Earth’ssurface are called
horrific
super fluid eruptions
volcanic
magmatic
12
What are plate tectonics?
theory that explains how new tectonic plates are grown
theory that explains why dinosaurs went extinct
explains how tectonic plates move and change shape
theory that explains time travel
13
What is the core of the Earth mostly comprisedof?
magnesium
iron
copper
nickel
14
What is continental drift?
theory describing the movement of the moon’scontinents
theory describing the movement of the Earth’scontinents
theory describing the temperature of the Earth’scontinents
theory that describes the stillness of Earth's continents
15
Why is the mantle denser than the crust?
It has more nickel
It has more magnesium
It has more iron
It has more water
16
What is subsidence?
the moving of continents
the destruction of Earth's crust through hurricanes
the raising of layers of Earth’s crust to higher elevations
the sinking of layers of Earth’scrust to lower elevations
17
What is sea-floor spreading?
process that creates intense earthquakes
process that causes subsidence
process that takes place at mid-ocean ridges
process in which the molten core rises to the surface
18
What determines how fast seismic waves travelthrough Earth’s layers?
heat
density
atmosphere
gravity
19
How do folded mountain ranges form? (two answers)
when two tectonic plates with continental crust collide.
crust moves upward at collision, forming mountains
when two tectonic plates with continental crust move apart
crust moves upward at the point ofcollision, forming lakes
20
What is the outer core?
the solid layer at the Earth’s center
the liquid layer at the Earth’s center
the floating layer at the Earth’s center
the layer made of nickel
21
How does position of hanging wall relative to theposition of a footwall tell us about stress? 2
rocks are pushed together by compression,hanging walls push
When rocks are pulled apart by tension, hangingwalls slip
When rocks are pulled apart by tension, hangingwalls rise
rocks are compressed,hanging walls fall apart

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