1st Quarter Sci (Plate Boundaries) Flashcards

1
Q

Active regions in Earth

A

Plate Boundary

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2
Q

3 Types of Plate Boundaries

A

Divergent, Convergent, and Transform Fault

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3
Q

Where two plates move apart from each other.

A

Divergent Boundaries

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4
Q

New crust is created at the boundary as two lithospheric moves away from each other.

A

Divergent Boundaries

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5
Q

Known as Constructive plate margins.

A

Divergent Boundaries

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6
Q

Formation of Divergent Boundaries

A

Rift Valley and Mid ocean Ridges

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7
Q

Rising magma from the Earth’s mantle to fill the gap (ocean floor).

A

Seafloor Spreading

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8
Q

Formation when in the land

A

Rift Valley

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9
Q

Examples of Mountyain chain (any)

A

East Pacific- Pacific and Cocos Plates
East Pacific - Nazca and Antarctic Plates
Galapagos- Pacific and Juan de Fuca Plates
Nazca, Cocos, and Pacific (triple junction)

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10
Q

When two plates move toward each other.

A

Convergent Boundaries

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11
Q

Where crust is Destroyed as one plate dives under another.

A

Convergent Boundaries

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12
Q

Called as Destructive plate margins or subduction

A

Convergent Boundaries

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13
Q

When one tectonic plate slides beneath another.

A

Subduction

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14
Q

3 Types of Convergent Boundaries

A

Oceanic-Continental, Oceanic-Oceanic, and Continental-Continental

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15
Q

Formation Convergent Boundaries

A

Volcanic Island, Deep sea Trenches, Volcanic Mountains

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16
Q

Example of Oceanic-Continental

A

Juan de Fuca and North American Plate (Cascade Range)
Philippine and Eurasian Plate (Japan Alps)

17
Q

explain Oceanic-Continental

A

Oceanic always subduct under continental.
Oceanic is denser so the oceanic will dive .
Oceanic colliding continental crust .

18
Q

explain Oceanic-Oceanic

A

When two oceanic plates collide Older crust will dive into younger oceanic.

19
Q

Formation Oceanic-Oceanic

A

Trench, Island Arc, and Chain of Volcanic Island

20
Q

Example of Oceanic-Oceanic

A

Eurasian and Philippine will form Philippine trench

21
Q

explain Continental-Continental

A

When two continents meet head on No subduction because both of them are less dense repetition
It forms mountains

22
Q

Example Continental-Continental

A

Eurasian Plate and Indian Plate (Himalayas)

23
Q

Sliding along with each other

A

Transform Fault

24
Q

Called conservative plate

A

Transform Fault

25
Q

When they occur on the seafloor, they form

A

Oceanic Fracture zones

26
Q

Formation Transform Fault

A

Major Earthquakes