DAY 1 Flashcards
Which layer of the Earth produce electrical currents that are responsible for the Earth’s Magnetic field?
a. inner core
b. outer core
c. lower mantle
d. upper mantle
b. outer core
Which line passes through the mid-Pacific Ocean and roughly follows a 180 degrees longitude North-South line on the Earth?
a. Tropic of Cancer
b. Prime Meridian
c. International Date Line (IDL)
d. Tropic of Capricorn
c. International Date Line
Which of the following is associated with a convergent boundary where earthquakes are produced?
a. Wadati-Benioff Zone
b. D* layer
c. Low Velocity Zone
d. Bullen Layer
a. Wadati-Benioff Zone
It refers to the slope of the stream’s channel. It is the vertical drop of the stream over a horizontal distance.
a. velocity
b. gradient
c. discharge
d. load
b. gradient
If the Erath 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:
a. global warming
b. greenhouse effect
c. positive feedback
d. negative feedback
d. negative feedback
The cleavage of amphibole is:
a. 90°
b. 60° and 120°
c. cubic
d. basal
b. 60° and 120°
This term refers to an easy qualitative way to judge the specific gravity of one mineral relative to one another. This is done by holding a piece of the first mineral in one hand and holding an equal-size piece of the second mineral in your other hand.
a. Water Displacement Method
b. Heft Test
c. Gravity Balance
d. Density Bottles
b. Heft Test
Trilobites are members of which phylum?
a. Arthropods
b. Mollusks
c. Echinoderms
d. Cnidarians
a. 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:
a. Law of Original Continuity
b. Law of Inclusion
c. Law of Cross-Cutting Relationships
d. Law of Superposition
c. Law of Cross-Cutting Relationships
It is the result of sedimentary deposition on an erosional surface formed on older igneous or metamorphic rock.
a. noncomformity
b. disconformity
c. angular unconformity
d. paraconformity
a. nonconformity
A fold in which the layers are younger as you move from the outer part of the fold toward the axial surface.
a. syncline
b. anticline
c. monocline
d. dome
a. syncline
A plot showing the record o ground motion caused by the passage of seismic waves.
a. seismometer
b. seismogarph
c. seismogram
d. travel time
c. seismogram
These are depressions in moraines, till, or out wash deposits that form when an isolated stagnant block of ice melts.
a. Kames
b. Drumlins
c. Outwash Plain
d. Kettles
d. 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.
a. pediments
b. sabkhas
c. playas
d. hardpan
b. sabkhas
A short wall constructed perpendicular to a coastline in order to trap sand along a beach.
a. seawall
b. breakwater
c. groin
d. jetties
c. groin
It is the largest contributor to the greenhouse efefct, responsible for ~60% of the warming.
a. water vapor
b. carbon dioxide
c. methane
d. nitrous oxide
a. water vapor
Which Greek letter is used as a numerical representation of the Wentworth Scale?
a. alpha
b. gamma
c. pi
d. phi
d. 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.
a. sorting
b. roundness
c. sphericity
d. maturity
d. maturity
Which isotope of potassium, decays partly by electron capture to an isotope of the gaseous element argon?
a. Potassium-39
b. Potassium-40
c. Potassium-41
d. Potassium-42
b. 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.
a. foraminifera
b. radiolaria
c. cocoliths
d. diatoms
b. radiolaria