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Pulling meapart

Pulling meapart TensionTension ChemicalChemical PhysicalPhysical Not my faultNot my fault

2

Tectonic plates consist of ______________________

1

3

both continental and oceanic crust.

1

4

The deep interior of the Earth can be mapped using ______________________

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5

seismic waves

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6

Wegener thought that all the continents were once together in one

large continent called ______________________

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What is Pangaea

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8

Evidence for sea-floor spreading has come from______________________

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magnetic minerals on the ocean floor

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10

A possible result of plates moving along a transform boundary is______________________

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11

What are earthquakes

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What is the outermost layer of the Earth called?

______________________

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What is the lithosphere

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What type of fault usually occurs because of tension?

______________________

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2

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What is normal

2

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What type of fault usually occurs because of compression?

______________________

3

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What is reverse?

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18

What kind of force can lead to mountains with sharp, jagged

peaks? ______________________

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What is tension

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20 5

What type of boundary is formed when plates collide? ______________________

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What is convergent

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According to the continental drift theory, a single, huge continent once

existed called______________________

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What is Pangaea ?

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Where does sea-floor spreading take place? ______________________

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What are the mid-ocean ridges

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26

The mantle is denser than the crust because it contains

more______________________

3

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What is magnesium

3

28

Seismic waves travel through Earth’s layers at different speeds

depending on the______________________

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29

What is density

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30

The fact that similar fossils are found on both sides of the ocean

is evidence of______________________

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What is continental drift.

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32

What do scientists use the global positioning system for?

______________________

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What is to measure tectonic plate motion

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34

What is it called when Earth’s magnetic poles change places?

______________________

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35

What is Magnetic reversal

2

36

The layer of rock that comprises 67% of Earth’s mass

____________________.

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What is the mantle ?

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38

What is the major evidence that sea-floor spreading creates new

lithosphere?

Explain your answer.

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39

What is

-Molten rock at mid-ocean ridges has magnetized minerals that align with Earth’s magnetic field

-When the Earth’s magnetic field reverses, the magnetized minerals align in the opposite direction

-The record of magnetic reversals is carried away from each side of the spreading center of a mid-ocean

ridge, showing that the molten rock is creating new lithosphere.

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40

What is the order of the layers of the Earth from the surface to the center?

______________________

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What are

Lithosphere,Asthenosphere,

Mesosphere,Outer core,Inner core

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42

Tectonic plates “float” on what ? ______________________

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What is Gondwana

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The San Andreas Fault is an example of a

______________________

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What is a strike-slip fault.

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46

Earth’s liquid layer ____________________.

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What is outer core

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48

Stress that stretches a rock layer____________________.

4

49

What is tension

4

50

Explain the process of subduction.

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51

-oceanic plate is forced beneath a less dense oceanic or continental plate at a convergent boundary

-Gravity pulls the oceanic plate into the hot asthenosphere, which causes

melting.

5