Earth’s Internal Heat And Magmatism Flashcards

1
Q

Thinnest layer

A

Crust

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2
Q

Mantle

A

Largest layer

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3
Q

Mantle’s estimated thickness

A

1800 miles

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4
Q

Composed of liquefied metals and stays on that state because of the immense heat

A

Outer core

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5
Q

Outer core is composed of metals such as

A

Iron and nickel

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6
Q

Composed of metals but not in a liquid state

A

Inner core

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7
Q

Ia a result of the movement of tiny particles

A

Heat

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8
Q

Heat moves particles that are

A

Atoms, molecules or Ions

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9
Q

Plays a vital role in our planet that makes it livable

A

Heat energy

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10
Q

Is the Internal heat energy accumulated by dissipation in a planet during its few million years of evolution

A

Primordial heat

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11
Q

Major contribution of this internal heat

A

Accretional energy

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12
Q

The energy deposited during the early formation of a planet

A

Accretional energy

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13
Q

The storage of primordial heat that originates from times of accretion when kinetic energy of colliding particles was transformed into thermal energy

A

Core

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14
Q

The core is a storage of…

A

Primordial heat

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15
Q

Heat is constantly lost to the outer silicate layers of the mantle and crust of the earth through…

A

Convection and conduction

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16
Q

Heat flows from the earth to the space through…

17
Q

Radiogenic heat

A

Thermal energy released as a result of spontaneous nuclear disintegration of natural radioactive element inside the planet

18
Q

Radioactive elements

A

Exists everywhere on earth in a fairly significant concentration.

19
Q

Radioactive decay

A

Is a process that creates the formation if the earth’s land

20
Q

Processes that transfers heat

A

Conduction, convection, radiation

21
Q

Conduction

A

Happen in the earth earth’s surface in almost entire solid portions of the earth and plays a very important role in the lithosphere.

22
Q

Convection

A

A very effective mode of heat transport in the earth by the movement of mass

23
Q

Radiation

A

Heat exchange between the sun and the earth

24
Q

Magma

A

Hot molten rocks beneath the earth

25
Highest amount of element on magma
oxygen
26
lowest amount of element on magma
Magnesium
27
Asthenosphere
lower part of the eart's crust and in the upper portion of the mantle
28
Partial melting
Different temp and pressure. Occurs in the lower crust or mantle
29
Melting point
Given temperature of a solid
30
How is magma formed
increase of temp, decrease of preasure, addition of volatiles
31
decompression melting
decrease of preasure that occurs on mid ocean ridge
32
Flux melting
adding impurities to lower the melting points that occurs in the subduction zones