Diagnostic Test: Board Review Flashcards
The layer of the Earth which produces electrical currents that are responsible for the Earth’s magnetic field?
Outer core
A line that passes through the mid-Pacific Ocean and roughly follows a 180 degrees longitude north-south line on the Earth?
International Date Line
Associated with a convergent boundary where earthquakes are produced?
Wadati-Benioff Zone
Refers to the slope of the stream’s channel. It is the vertical drop of the sream over a horizontal distance.
gradient
If the Earth warms, more area becomes arid resulting in an increase in the amount of dust in the atmosphere, which reflects solar radiation causing cooling. This is an example of:
negative feedback
The cleavage of amphibole is:
60 degrees and 120 degrees
This term refers to an easy qualitative way to judge the specific gravity of one mineral relative to another. This is done by holding a piece of the first mineral in one hand and holding an equal-sized piece of the second mineral in your other hand.
Heft Test
Trilobites are members of which phylum?
Arthropods
A dike, vein, fracture, or fault that cuts across the fabric of another rock body is younger than any other rock that it cuts across. This is a statement of:
Law of Cross-Cutting Relationships
A result of sedimentary deposition on an erosional surface formed on older igneous or metamorphic rock.
nonconformity
A fold in which the layers are younger as you move from the outer part of the fold toward the axial surface
syncline
A plot showing the record of ground motion caused by the passage of seismic waves.
seismogram
These are depressions in moraines, till, or outwash deposits that form when an isolated stagnant block of ice melts.
Kettles
These are flat areas in an arid environment where sediment has been removed by wind or moving water down to very near the water table, and evaporite minerals crystallize at or near the ground surface.
sabkhas
A short wall constructed perpendicular to coastline in order to trap sand along a beach
groin
It is the largest contributor to the greenhouse effect, responsible for ~60% of the warming.
Water vapor
Greek letter that is used as a numerical representation of the Wentworth Scale?
phi
This refers to the extent to which the material has changed when compared with the starting material of the bedrock it was derived from.
maturity
An isotope of potassium, decays partly by electron capture to an isotope of the gaseous element argon?
Potassium-40
Which marine microfossil commonly have silica skeletons and are roughly spherical, often spiny organisms less than a millimeter across? They are important in the dating of deep-marine deposits because the skeletons survive in siliceous oozes deposited at depths below the CCD.
radiolaria
