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Geology Exam 1
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What are
BODY WAVES?
They
travel
through the
interior body of the earth.
*Primary Wave
*Secondary Wave
In an earthquake, if feels like a
sharp jolt.
What are
Surface Waves?
They
ONLY TRAVEL
through
Earth's surface.
In an earthquake, if feels like a
rolling motion.
What are the 2 types of
Seismic Waves?
Body Waves
Surface Waves
What is a
Geothermal Gradient?
Temperature
changes
with
depth
within the crust.
What are
XENOLITHS
(foreign rocks)?
Pieces of Earth's mantle
which have been ripped up and brought to surface in
volcanic eruptions.
What is responsible for the
generation
of Earth's Magnetic Field?
Earth's
Outer Core
What is & where is the
Lithosphere?
It is
above
the asthenosphere
& consists of both
solid mantle & the crust.
What & where is the
Asthenosphere?
The
"plastic zone"
within the mantle.
Ex.
Silly Putty
Has properties of both
solid & liquid.
Located in the
upper mantle.
What is the
CORE
made of?
It is made of
Iron
with
lesser
Nickel & Sulfur.
Is the
Inner Core
solid
or
liquid
?
How about the
Outer Core?
Inner Core:
Solid
Outer Core:
Liquid
What is the
MANTLE?
Made of
PERIDOTITE
SOLID
Very
dense
What is the
OCEANIC CRUST?
Made of
basalt
High density
Thin
:
5-10km
What is the
CONTINENTAL CRUST?
Made of
GRANITE
Low in density
Thick:
35-75km
What caused
ACCRETION
to occur?
The
formation of stars.
Solar wind blows lighter gases to outer reaches of the solar system.
What is
ACCRETION?
The
process
in which
planets begin to form.
There is
growth by gravitational attraction.
Ex
. Craters
: formed from the collision of asteroids with the planet.
What is the
T-Tauri Phase?
It is the stage of evolution when stars are first "born".
Stars are characterized by
INTENSE
solar winds of
RADIATION
.
What happens as the
NEBULA
begins to
spin
?
The
spinning Nebula
flattens
into a disc.
Due to gravity, the material is drawn to the center.
*
Helium & Hydrogen
makeup the majority of the material.
What are the
NEBULAE
(plural for
Nebula
)?
"
Clouds
" of
metallic dust & gases
that are the
remnants of exploding stars.
Author
storres40
ID
242551
Card Set
Geology Exam 1
Description
The Origin of the Earth & Solar System Interior of the Earth Plate Tectonics
Updated
2013-10-24T06:14:54Z
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