Earth's Interior/ Pla. Tectonics Quiz 1 Flashcards

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0
Q

What Is The Rock Composition Of The Crust?

A

Mostly aluminum and silicon

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1
Q

What state of matter is the crust?

A

Solid

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2
Q

What are the two types of crust?

A

Oceanic crust and continental crust

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3
Q

What state of matter of matter is the mantle?

A

Semi-solid

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4
Q

What causes plates to move due to the temperature differences between the mantle and the crust, hot air rises and cool sinks?

A

Convection (heat) currents

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5
Q

What increases as you go deeper?

A

Pressure and temperature

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6
Q

How thick is the Mantle?

A

1,800 miles thick

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7
Q

What layer make up 80% of the Earth’s volume?

A

The mantle

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8
Q

Plate tectonics theory that pieces of the Earth’s lithosphere, called plates, move about slowly on top of what layer?

A

The Asthenosphere

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9
Q

The continents are believed to have been connected together in a large continent called what, and what is the meaning of the word?

A

Pangea, and “all land”

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10
Q

Name three “evidences” of plate tectonics.

A

Matching coastlines, shared fossils, and paleomagnetism. (Can also be polar reversals, matching glaciers, rock strata (layers) match, and matching mountain ranges.

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11
Q

What is the rock composition of the mantle?

A

Mostly iron and magnesium

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12
Q

What is the mantle made of?

A

Tectonic plates

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13
Q

What is the rock composition of the core?

A

Iron and Nickel

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14
Q

Is the core solid or liquid?

A

Solid

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