Shared Flashcard Set

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Earth Science Lab Final
Earth science questions
56
Environmental Studies
Undergraduate 1
11/26/2012

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Cards

Term
Meter
Definition
The base unit for length in the metric system
Term
Crystal habit is a reflection of the _____ of the mineral.
Definition
Atomic structure
Term
Luster
Definition
The way in which a mineral reflects light
Term
Cleavage
Definition
The way in which a mineral breaks along weak bonds
Term
Lithification
Definition
The process by which sediments are compacted and cemented to for rock
Term
Metamorphism
Definition
The process by which rocks are altered by heat, pressure and/or fluids.
Term
Why is a sedimentary rock classified as a conglomerate?
Definition
The grains are rounded and gravel size or larger
Term
An example of isotopes used in absolute dating would be Carbon-14 decays to what?
Definition
Nitrogen-14
Term
How much of the parent isotope decays into the daughter isotope in absolute dating?
Definition
1/2
Term
Radiometric dating works well with ____ rocks because they often contain the isotope pairs needed for the process and have not been altered
Definition
Igneous
Term
The Prime Meridian divides the Earth into....
Definition
Eastern and Western Hemispheres
Term
Triangulation
Definition
The method of using three seismograph stations to locate the epicenter
Term
Magnetic Declination
Definition
The angular difference between true north and magnetic north and changes with time
Term
Moh's Hardness Scale
Definition
Has ten levels of hardness
Term
Crystal size in igneous rock is controlled primarily by
Definition
Cooling Rate
Term
Sandstone
Definition
The parent rock of the metamorphosed rock quartzite
Term
Detrital
Definition
The sedimentary rocks that consist of particles broken off of preexisting rocks
Term
Calcite
Definition
The main mineral composition of marble
Term
Gneiss
Definition
Has the highest grade of metamorphism compared to Phyllite, Slate, and Schist
Term
Limestone
Definition
Considered a detrital sedimentary rock
Term
UTM coordinate systems
Definition
Repeat in every zone
Term
Felsic compositon
Definition
Lighter colors: pinks and browns
Term
Mafic composition
Definition
Darker colors: black and green
Term
Ways to identify a mineral
Definition
Smell, luster, cleavage
Term
Law of Superposition
Definition
The older layers are below the newer layers
Term
Law of cross-cutting relationships
Definition
A layer must first exist before anything can intrude in it
Term
Law of Faunel Succession
Definition
Fossils in older layers of sediment existed before those in newer layers
Term
Latitude vs. Longitude
Definition
NS vs. EW
Term
Angular Unconformity
Definition
sed. Rock rest on the eroded surface of tilted or folded older rocks
Term
Non-conformity
Definition
sed. Rocks lie on an erosion surface cut into igneous or metamorphic rocks
Term
Waves are primarily a movement of what?
Definition
Energy
Term
23.5 degrees
Definition
The tilt of the earth's axis
Term
June 21st
Definition
Summer solstice
Term
90 degrees
Definition
The maximum number of degrees North Latitude possible
Term
Topographic Maps
Definition
Depict 3D landforms with a series of contour lines connecting points of equal elevation
Term
Number of time zones
Definition
24
Term
Time zones are located
Definition
every 15 degrees of longitude
Term
December 21st
Definition
Summer in South America
Term
March 21st
Definition
Vernal equinox
Term
Astronomical Unit
Definition
Distance from the sun to the earth
Term
Neptune
Definition
Jovian Planet
Term
Venus
Definition
Terrestrial Planet
Term
Solar Winds
Definition
Streams of high velocity radiation, light and charged particles
Term
Cumulo form
Definition
Clouds that look like large, fluffy stacks of cotton balls
Term
Occluded Front
Definition
When a fast moving cold front catches up with a warm front
Term
Albedo
Definition
Considered the reflectivity of a material
Term
Vapor Pressure is expressed in what?
Definition
Milibars
Term
Steam Devils
Definition
Swirling columns of fog in a think fog bank
Term
Front
Definition
The transition zone between two different air masses
Term
Neap tide
Definition
Lower tide
Term
Spring tide
Definition
Higher tide
Term
Aphanetic Texture
Definition
Small crystals
Term
Phaneritic Texture
Definition
Large crystals
Term
Pegmatic
Definition
a form of igneous rock consisting of extremely coarse granite resulting from the crystallization of magma rich in rare element
Term
Clastic
Definition
the type of sedimentary rock, like sandstone and shale, that is formed from fragments of other rocks
Term
Focus
Definition
the location on the fault where the earthquake begins
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