Layers and Tectonic Plates Quiz Flashcards

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1
Q

As you go deeper into the earth what happens to the temperature?

A

Hotter

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2
Q

Lithosphere

A

A rigid layer made up of the uppermost part and mantle of the crust.

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3
Q

Divergent Boundary

A

The boundary between 2 tectonic plates that are moving away from each other.

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4
Q

Tectonic Plate movement per year is measured in…

A

Centimeters

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4
Q

Asthenosphere is the layer over which…

A

The lithosphere floats/moves on it

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5
Q

Earthquake

A

Shaking and vibration at the surface of the earth resulting from underground movement along a fault plane or from volcanic activity.

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6
Q

Tectonic Plates

A

Sections of the Earths crust that move due to convection currents

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7
Q

What type of fault/boundary is this?
*One plate going under one going over.

A

Subduction Convergent

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8
Q

What type of fault/boundary is this?
*Two plates moving away from each other and a bump in the middle (mountains)

A

Divergent Boundary

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9
Q

Continental Crust

A

The relatively thick part of the Earth’s crust that forms the large landmasses. Lots of silica.

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10
Q

Inner Core

A

A dense sphere of solid iron and nickel at the center of the earth’s core.

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11
Q

The red highlighted area is the world’s longest mountain range lying under the water in the deep ocean. What is this mountain range/ridge called?

A

Mid-oceanic ridge

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12
Q

What type of fault/boundary is this?
*Two plates rubbing against each other (going opposite ways but touching)

A

Transform

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13
Q

Density

A

Mass per unit volume

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13
Q

All mid-oceanic ridges are called what type of boundary?

A

Divergent

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14
Q

Rift valley

A

A deep valley that forms where 2 plates move apart at a divergent boundary.

15
Q

Mid-Oceanic Ridge

A

The longest mountain range in all the world; all along the center of the Atlantic Ocean; formed by active volcanoes through the sea floor spreading.

15
Q

What type/boundary is this?
*Two plates going up against each other to make mountains

A

Convergent continental vs. continental

16
Q

Transform Boundary

A

The boundary between tectonic plates that are sliding past each other horizontally.

17
Q

Subduction Zone

A

In tectonic plates, the site at which an oceanic plate is sliding under, a continental plate.

18
Q

Convection Currents

A

Circular currents in the mantle cause by magma being heated by the outer core.

19
Q

Outer Core

A

A layer of molten iron and that surrounds the inner core of the earth.

20
Q

Earth’s magnetic field that protects us from the sun’s solar winds is created by what layer?

A

Outer core

21
Q

Asthenosphere

A

A soft layer of the mantle on which the lithosphere floats

22
Q

What theory is responsible for explaining why the continents once touched?

A

Continental Drift Theory

23
Q

Richter Scale

A

A scale that rates an earthquake’s magnitude based on the sizes of its seismic waves.

24
Q

Ring of Fire

A

A major belt of volcanoes that rims the Pacific Ocean

25
Q

As you go deeper into the earth the pressure…

A

Increases

26
Q

Oceanic Crust

A

A thinner, more dense, younger crust making the ocean floor

27
Q

Transform Boundary

A

A boundary between tectonic plates that are sliding past each other horizontally.

28
Q

Lower Mantel

A

The portion of the mantle below a depth of about 600 miles.

29
Q

Upper Mantel

A

The portion of the mantle above a depth of about 600 miles.

30
Q
A