Earth Materials I Introduction - uml.edu...•White dwarf •Black dwarf •In special cases –...
Transcript of Earth Materials I Introduction - uml.edu...•White dwarf •Black dwarf •In special cases –...
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Earth Materials I – Introduction
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The “Big Bang”
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• Stars are classified by color and brightness
• Color is an indication of temperature
• brightness is a function of both the star’s luminosity (energy emitted)
and its distance from the Earth
Stars – Classification and Formation
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Life history of a star
•Main sequence
•White dwarf
•Black dwarf
•In special cases – neutron star or black hole
When the star leaves the
main sequence at the
end of the fusion
reactions a variety of
processes occur,
referred to as r, s, and p,
which form the
elements in the periodic
table with atomic
numbers greater than 26
(Fe).
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Formation of the Solar System
Nebula
Flattened rotating nebula Planetesimal hypothesis
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Physical Properties of the
Planets
• Size
• Density
• Distance from sun
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Chemistry of the Planets - Meteorites
Iron m
eteo
rite
Stony meteorite
Sto
ny
-iro
n m
eteo
rite
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Most meteorites come from the Asteroid belt
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Structure of the Earth
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Heat Flow
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Types of Plate Interactions