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g10 > 1st Quarter Sci (Location of Plate Tectonics) > Flashcards

1st Quarter Sci (Location of Plate Tectonics) Flashcards

1
Q

What are the 2 Mechanical Layers

A

Lithosphere and Asthenosphere

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2
Q

What comprise the crust and uppermost part of the mantle

A

Lithosphere

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3
Q

Its rigid layers, can break under stress

A

Lithosphere

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4
Q

Broken into small and large sections called tectonic plates

A

Lithosphere

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5
Q

How thick is asthenopshere

A

180 km thick

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5
Q

What contains in asthenosphere

A

hot, molten rocks or magma

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6
Q

Mechanisms of heat transfer

A

Convection current

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6
Q

Can deform and reshape as a result of the hot, molten mantle which circulates as convection current.

A

Asthenosphere

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7
Q

What are the 4 major layers of the earth

A

Crust Mantel Outer core Inner core

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8
Q

Outermost layers of earth

A

Crust

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9
Q

how thick is the continental crust

A

40-70 km thick

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10
Q

Composition of continental crust

A

Granitic rocks and aluminum silicates

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11
Q

how thick is the Oceanic crust

A

7-10 km thick

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12
Q

Composition of Oceanic crust

A

Basaltic rocks and magnesium silicates

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13
Q

Thickest layer

A

Mantel

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14
Q

What is the thickness of Mantel

A

2900 km thick; 80% of Earth’s mass

15
Q

Composition of Mantel

A

Ferro-magnesium

16
Q

Matter of Mantel

A

Semi solid, rocky, and very hot

17
Q

Temperature of Mantel

A

Upper- 900c and lower- 1000-3700c

18
Q

Thickness of Outer core

A

2270 km thick

18
Q

Only liquid layer of the earth

A

Outer core

19
Q

Composition of Outer core

A

Liquid, iron, nickel

20
Q

Temperature of Outer core

A

3700-4300c

21
Q

Pure solid

A

Inner core

22
Q

thickness of inner core

A

1220 km thick

23
Q

Composition of Inner core

A

Solid iron

24
Q

Temperature of Inner core

A

6000c

25
Q

Boundaries between crust and upper mantle

A

Mohorovicic Discontinuity

26
Q

Boundaries between lower mantle and outer core

A

Gutenberg Discontinuity

27
Q

Boundaries between outer core and inner core

A

Lehmann Discontinuity

28
Q

Describe the movement of the lithosphere

A

Plate Tectonic

29
Q

Whats the greek word of plate tectonic

A

Tekton

30
Q

7 Primary Plates

A

Eurasian
African
Australian
Antarctic
South American
North American
Pacific

31
Q

8 Secondary Plates

A

Indian
Arabian
Scotia
Nazca
Caribbean
Cocos
Juan de Fuca
Philippine

32
Q

Earth is linked to a grape that contracted into raisin due to a cooling process, occurring after the bigbang.

A

Raisin Theory/Contraction Theory

33
Q

Explains the structure of the earth’s crust

A

Plate Tectonics Theory

g10 (36 decks)

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