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EARTH SCIENCE > Plate Boundary Interactions > Flashcards

Plate Boundary Interactions Flashcards

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1
Q

What are the 3 types of plate boundary?

A

Convergent, divergent and transform

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2
Q

Plates separate

A

divergent plate boundary

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3
Q

Plates come together

A

convergent plate boundary

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4
Q

Plates slide past one another

A

transform plate boundary

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5
Q

TRUE OR FALSE

As plates move apart, water fills up the gap.

A

FALSE, magma fills up the gap

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6
Q

IDENTIFY

__________ has a divergent plate boundary running through its middle.

A

Iceland

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7
Q

What country is an example of a continental rifting?

A

Iceland

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8
Q

What are the 3 styles of convergent plate boundaries?

A

> Continental-continental collision
Oceanic-oceanic collision
Continental-oceanic collision

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9
Q

What style of convergent plate boundary forms mountains?

A

Continental-continental collision

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10
Q

TRUE OR FALSE

Himalayas is an example of a continental-continental collision.

A

TRUE

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11
Q

What style of convergent plate boundary has a subduction zone?

A

Continental-oceanic collision

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12
Q

IDENTIFY
Oceanic plates _________ underneath the continental plate. Ocean plate heats and ________. The melt rises forming ___________.

A

subduct, melts, volcanoes

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13
Q

TRUE OR FALSE

When 2 oceanic plates collide, one runs over the other which causes it to sink into the mantle forming subduction zone.

A

TRUE

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14
Q

IDENTIFY

The subducting plate is bent downward to form a very deep depression in the ocean floor called a __________.

A

trench

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15
Q

TRUE OR FALSE

The worlds deepest parts of the ocean are found along the middle.

A

FALSE, along trenches

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16
Q

Region with active volcanoes and frequent earthquakes.

A

Pacific Ring of Fire

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17
Q

Volcanoes are formed by 3 ways. What are those?

A

By subduction, rifting and hotspots

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18
Q

Hot mantle plumes breaching the surface in the middle of a tectonic plate.

A

Hotspot/hotspot volcanoes

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19
Q

TRUE OR FALSE

Earthquakes are randomly distributed over the globe.

A

FALSE, not randomly distributed

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20
Q

IDENTIFY

At the boundaries between plates, __________ causes them to stick together.

A

friction

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21
Q

TRUE OR FALSE

When built up, energy causes them to break, earthquakes occur.

A

TRUE

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22
Q

These are areas between tectonic plates where the plates interact.

A

Plate boundaries

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23
Q

As the plates interact, fractures on the Earth’s crust develop. What do you call those fractures?

A

faults

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24
Q

TRUE OR FALSE

When 2 plates move away from each other, it forms a gap or a rift between them.

A

TRUE

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25
Q

What is being created when the gap eventually widens?

A

rift valley

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26
Q

What are the 2 types of divergent boundary?

A

oceanic-oceanic and continental-continental

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27
Q

Divergent boundaries between 2 oceanic plates.

A

Oceanic-oceanic divergent plate boundary

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28
Q

It refers to the mountain ranges under water.

A

mid-oceanic ridges

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29
Q

What is being formed in places where molten lava or magma can move up and fill the gap?

A

volcanic islands

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30
Q

The molten lava that rises eventually cools and forms part of the ocean floor. This is called?

A

Seafloor spreading or ocean floor spreading

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31
Q

This happens between 2 continental plates.

A

continental-continental divergent plate boundary

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32
Q

TRUE OR FALSE

Any continent or landmass above a divergent plate boundary will be torn apart into distinct landmasses.

A

TRUE

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33
Q

TRUE OR FALSE

At divergent plate boundaries, surrounding waters will fill the space between them and later become an ocean.

A

TRUE

34
Q

IDENTIFY

Iceland itself lies on top of a divergent boundary between _____________ and _____________.

A

North American plate and Eurasian plate

35
Q

Divergent plates interaction results to?

A

Formation of volcanic island arc, mid-oceanic ridges, rift valley and earthquakes

36
Q

It is the opposite of the divergent plate boundary. The plates crash into each other. 2 plates slide towards each other.

A

Convergent plate boundary

37
Q

After the collision in convergent plate boundaries, it has the same results.

A

FALSE

38
Q

What is the reason why the results of convergent plate boundaries yields different outcomes?

A

It depends on the type of plates or crust that collide.

39
Q

Convergent plate boundary can form either?

A

subduction zone or orogenic belt

40
Q

If one plate moves underneath the other, what is this?

A

Subduction zone

41
Q

If two plates simply collide and compress, what is this?

A

Orogenic belt

42
Q

What are the 3 types of convergent plate boundaries?

A

continental-continental, oceanic-oceanic and continental-oceanic

43
Q

When 2 continental plates collide, neither of them sink below the other hence, no subduction zone is formed.

A

Continental-continental convergent plate boundary

44
Q

Why they are uneven elevations in the form of mountain ranges?

A

Because the crusts push each other upwards or sidewards.

45
Q

When 2 oceanic plates converge.

A

Oceanic-oceanic convergent plate boundary

46
Q

IDENTIFY

When 2 oceanic plates converge, a ___________ is formed.

A

subduction zone

47
Q

OLDER PLATE OR YOUNGER PLATE

Which is subducted in oceanic-oceanic convergent plate boundary?

A

OLDER PLATE

48
Q

Why older oceanic plate is subducted rather than the younger plate?

A

Because it is more dense

49
Q

IDENTIFY

Once the oceanic plate sinks, its rocks melt which forms and fuels a magma chamber, forming _____________.

A

volcanic arc

50
Q

How many plates collided that formed the archipelago of Japan?

A

4 different plates

51
Q

TRUE OR FALSE

As the subduction zone were formed, oceanic trenches are also created.

A

TRUE

52
Q

What do you call the long and narrow depressions in the ocean floor?

A

Oceanic trenches

53
Q

This happens between an oceanic and continental plates that eventually collides.

A

Oceanic-continental convergent plate boundary

54
Q

OCEANIC CRUST OR CONTINENTAL CRUST

Which is being subducted?

A

Oceanic crust

55
Q

Where does an oceanic trench formed?

A

In the area of convergence

56
Q

Why an oceanic crust is subducted?

A

Because it is denser compared to the continental crust.

57
Q

What is being created when the subducted crust melts and forms the magma chamber. The magma then escapes to the earth’s surface.

A

Continental volcanic arc or volcanic mountain

58
Q

Convergent plates interaction results to?

A

Formation of volcanic arc/volcanic mountain, ocean trenches, mountain ranges, volcanoes and earthquakes

59
Q

TRUE OR FALSE

Aside from the crashing into each other or moving apart, plates can also slide with each other.

A

TRUE

60
Q

It is an area where plates slide past each other.

A

Transform plate boundary

61
Q

On what places do transform boundaries are found?

A

ocean floor and mid-oceanic ridges

62
Q

TRUE OR FALSE

There are structures formed in transform boundaries.

A

FALSE, no structures are formed

63
Q

Why there are no structures formed in transform boundaries?

A

Because the plates are just sliding past one another.

64
Q

Transform plate boundary is also called as?

A

Conservative plate boundary

65
Q

Why the transform plate boundaries are also called as conservative plate boundary?

A

Because the energy is being conserved due to the sliding of plates.

66
Q

What is the most famous transform boundary?

A

San Andreas Fault found in California, USA

67
Q

What are the 2 plates involved in the San Andreas Fault?

A

North America and Pacific plate

68
Q

Transform plates interaction results to?

A

Earthquakes

69
Q

TRUE OR FALSE

The result of a transform plate boundary involves volcanoes, mountains and earthquakes.

A

FALSE, only earthquakes

70
Q

TRUE OR FALSE

San Andreas fault is stocked due to the sliding movement, but there are still continuous movements that cannot be felt.

A

TRUE

71
Q

IDENTIFY

San Andreas fault has a ___________ that will become a ___________ with a result of a very strong earthquake.

A

potential energy, kinetic energy

72
Q

TRUE OR FALSE

At hotspot regions, there are holes in its middle where magma exits.

A

TRUE

73
Q

Also called spreading centers.

A

Divergent boundaries

74
Q

2 plates grind past each other without the production or destruction of the lithosphere.

A

Transform plate/fault boundaries

75
Q

Continuous elevated zones on the floor of all major ocean basins.

A

Oceanic ridges

76
Q

Deep faulted structures found along the axes of divergent plate boundaries. They can develop on the seafloor or on land.

A

Rift valleys

77
Q

IDENTIFY

Seafloor spreading produces _____________.

A

new oceanic lithosphere

78
Q

What is formed when spreading centers develop within a continent, the landmass may split into 2 or more smaller segments.

A

Continental rifts

79
Q

IDENTIFY

At the time of formation at transform plate boundary, they roughly _________ the direction of plate movement.

A

parallel

80
Q

They aid the movement of oceanic crustal material.

A

Transform plate boundary

EARTH SCIENCE (4 decks)

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