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Final Questions
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135
Geology
Undergraduate 2
11/19/2013

Additional Geology Flashcards

 


 

Cards

Term
Geology is the study of ______ and this study can be broken into 2 areas, _________ and __________.
Definition
Earth, physical, and historical
Term
Why would the Earth be looked upon as a system?
Definition
As one aspect changes, another aspect responds to that change.
Term

Which one of these items would be within the Biosphere?

 

Tree

Horse

Fish

 

Definition
All of them
Term

Where do plate tectonics take place?

 

Definition
lithosphere
Term

Which two types can the crust be broken up into?

 

Solid and liquid

hard and soft

thin and thick 

igneous and sedimentary

Definition
None of these
Term

Total volume of Planet Dudley= 10,000 cubic centimeters

  • The densities of P.D. crust, mantle, & core same average densities of the Earth
  • V of crus, mantle, and core of P.D. same % of the total V as the V % of total V for the Earth's.
  • D=M(mass)/V(volume)
The volume of the crust for planet Dudley?
Definition
100 cubic centimeters
Term

Total volume of Planet Dudley= 10,000 cubic centimeters

  • The densities of P.D. crust, mantle, & core same average densities of the Earth
  • V of crus, mantle, and core of P.D. same % of the total V as the V % of total V for the Earth's.
  • D=M(mass)/V(volume)
The mantle volume of planet Dudley?
Definition
8300 cubic centimeters
Term

What are key markers of plate boundries?

 

dark line

earthquakes

volcanic activity

none of these

Definition
earthquakes and volcanic activity
Term

Why is the core on Earth so much denser than the crust and mantle on Earth?

 

Definition
large percentage of iron
Term

The Earth's composition and density in the early years could be looked upon as being _______ throughout the Earth's layers.

 

Definition
uniform
Term

The following feature is found to be associated with a covergent boundary?

 

basin 

mountains

glaciers

beaches 

 

Definition
mountains
Term

The following feature is found to be associated with a divergent boundary?

 

basin 

mountains

glaciers

beaches 

 
Definition
basin
Term

Atoms---->_____A____---->Minerals---->_____B_____

 

 

A= protons B=neutrons

A=neutrons B= protons

A=rocks B=elements

A=elements B=rocks

 

Definition
elements...rocks
Term
Why did the densities of the layers of the Earth become more differentiated over time?
Definition
due to the different densities of the elements within the Earth
Term
[image]
Definition
Metamorphic Rock-A
Sedimentary Rock-B
Igneous Rock (Intrusive)-C
Igneous Rock (Extrusive)-D
Term
Mechanism responsible for re-cycling of rock material is also responsible for driving the rock cycle.
Definition
plate movement
Term
The most abundant mineral group in the Earth's crust is
Definition
silicates
Term
The tendency of minerals to break along planes of weakness is called?
Definition
cleavage
Term
[image]
Definition
Example of covalent bonding
Term
Comparing Quartz a non-metallic silicate to Olivine a metalic silicate. Which would be more dense?
Definition
Olivine
Term
If a mineral contained the chemical structure (CaCO3) or calcite which mineral would they belong to?
Definition
carbonates
Term
Minerals can originate from?
Definition
Cooling of magma
hot water solutions
on the seafloor from black smokers
Term
If an area contained a gold deposit that was worth 1 million dollars and it would cost 1 million in overhead to mine the gold. You should?
Definition
Wait until the price of gold rises until you mine the deposit
Term
Igneous rocks that contain minerals that crystallize at very high temperatures would be of what magma type?
Definition
mafic
Term
As the rate of cooling increases(speeds up), the size of the crystals that form?

Increase or decrease
Definition
decrease
Term
intrusive igneous rocks?

are generally fine grained
form at Earth's surface
are quite often vesicular
are also termed volcanic
Definition
none of the above
Term
Igneous rocks are classified on
Definition
composition and mode of formation(texture)
Term
Why would you not find vesicular and glassy textures in igneous rocks formed under the Earth's crust?
Definition
higher pressure and temperature inside the earth
Term
Why do felsic magamas flow at slower rates than mafic magmas?
Definition
due to their higher silica content and tetrahedra form of silica minerals
Term
As magmas solidify by fractional crystallization(where the crystallizing minerals are formed by the magma cooling due to temp decreasing), the remaining magma becomes progressively more ______ in composition.
Definition
felsic
Term
texture of igneous rock
Definition
is a record of the rock's cooling history
Term
igneous rocks are formed
Definition
by crystallization of freezing of molten rock
Term
What type of magma melt would be found at a oceanic/oceanic divergent boundary?
Definition
Mafic
Term
Which of these volcanoes produce more of felsic magma? (more viscous)

Shield
Lava Domes
Composite
Definition
Lava Dome
Term
Which of these volcanoes produce more of mafic magma? (less viscous)

Shield
Lava Domes
Composite
Definition
shield
Term
Why would a volcano with a very high felsic content of its magma create a more violent eruption?
Definition
because of the higher viscosity of the felsic magma
Term
What is the difference in a Terrestrial planet versus a Jovian Planet?
Definition
Terrestrial high density/small planet and Jovian low density/large
Term
Which of the following is true about mechanical weathering?

produces smaller pieces
adds to effectiveness of chemical weathering
may lead to the formation of talus slopes
Definition
all of them are true
Term
When water combines with carbon dioxide to form carbonic acid this would be an example of what chemical weathering?
Definition
solution
Term
What is an example of oxidation(i.e. Rust)?
Definition
4Fe + 3CO2 -----> 2Fe2O3
Term
[image]
Definition
A. would weather faster
Term
A rock that is composed of minerals that were formed at low heat and pressure will chemically weather faster or slower?
Definition
slower
Term
Which of the following practices will deteriorate the soil?

Man growing the same crop over and over on the same piece of land.
Man cutting a steep slope on a piece of land.
Planting grass on a steep slope area.
Definition
Man growing the same crop over and over on the same piece of land. and
Man cutting a steep slope on a piece of land
Term
What soil conservation practices would you use in an area of steep slope?

contour plowing
windbreaks
terracing
crop rotation
Definition
contour plowing and terracing
Term
A soil profile where Horizon A contains unstable soluable minerals could be identified as a ______________ soil.
Definition
pedocal
Term
Soil types around the globe are strongly controlled by:

Which one?

underlying rock type
average annual temperatures
type of organisms in the area
Definition
all of them
Term
Deposition of material that form sedimentary rocks

form in horizontal layers
form at or near earth's crust
sedimentary particles are deposited either by mechanical or chemical processes
Definition
all of them
Term
Which lithification process happens more with the chemical (non-clastic) rocks?
Definition
cementation
Term
In an area where there is a large amount of precipitation there would be a large amount of leaching of soluble minerals. What horizon of the soil profile would collect a majority of these leached minerals?

Horizon O
Horizon A
Horizon C
Horizon B
Definition
Horizon B
Term
Sedimentary Rocks are categorized by?
Definition
cementaion and mode of deposition
Term
Lithification can happen in the following ways:
Definition
compaction, cementation and re-crystallization
Term
A stream loaded with sediment that slows down in velocity due to the stream reaching an ocean would result in what type of depositional environment?
Definition
transitional
Term
Limestone would be produced in what environment?
Definition
low energy
Term
[image]
Definition
Transgression strata sequence
Term
[image]
Definition
Continental subsidence and glacier melting can cause this
Term
[image]
Definition
Shows flows velocity and flow direction
Term
[image]
Definition
Streams C
Oceans A
graded bedding B
Term
Which of the following is not the important resource from sedimentary rocks?

petroleum
banded ion formations
coal
Definition
all are important resources of sedimentary rocks
Term
Metamorphism may result from

Which one?

heat
pressure
fluid activity
Definition
any or all of these
Term
of the 3 types of metamorphism which type is associated to mountain ranges?
Definition
regional
Term
[image]
Definition
C would have a higher degree of metaphorism
Term
Rocks that have been subjected to heat and and differential pressure that arrange minerals in a parallel fashion is said to have:
Definition
foliated texture
Term
If you were able to determine an age of a metamorphic rock being 3.2 billion years old what could you say about the age of the Earth?
Definition
The Earth is older than 3.2 billion years old
Term
[image]
Definition
you can use principle of original horizontality, principle of cross cutting and superposition when dealing with relative dating of this piece of land.


Age order: D,A,C,B,E,F
Term
[image]
Definition
angular unconformity
Term
Americum with an atomic mass number of 246 and Thorium with an atomic mass number of 230. What kind and how many radioactive decay steps does it take for Americum 95 to decay to Thorium 90?
Definition
4 Alpha and 3 Beta Decay
Term
What is the most important concept behind radioactive dating?
Definition
the ability to calculate an exact rate and time of the decay
Term
[image]
Definition
B is an older rock sample due to the fission track
Term
If you were going to date an age of a dead cow, what method would you use?
Definition
Carbon 14 dating
Term
If you cut the bottom stem portion of a tree and you can see 9 growth rings, how old would the tree be?

8
18
10
27
Definition
None of the above
Term
How many years ago did the first humans appear?
Definition
1.8 Million years ago during the Pliocene
Term
How many years ago did dinosaurs go extinct?
Definition
146 Million years ago during the Cretaceous
Term
The term "Moho" defines the boundary between the:
Definition
mantle and crust
Term
[image]
Definition
Since the density goes up 1 and the elasticity goes up 0.5 every foot... the velocity of P waves and S waves would decrease with depth
Term
Why does S waves not travel through the core?
Definition
because the outer core behaves like a liquid
Term
In what order would surface and body waves arrive at a seismic station?
Definition
P-wave, S-Wave, L-Wave, R-Wave
Term
The principle of where material of a certain density subsides or sinks to an equilibrium depth and floats at this equilibrium is called ___________
Definition
isostasy
Term
Which of the following geological processes is typically related to a convergent plate boundary?

Deep Focus Earthquakes
Subduction
Volcanic belts
Definition
All of the above
Term
[image]
Definition
Hypocenter (focus) is C
Term
What key principle helps explain the process of what layers of rocks go through and leads too earthquakes is called _______.
Definition
elastic rebound
Term
An earthquake occurred with the epicenter under Lee Hall, resulting in $1.5 million worth of damages and caused 7 fatalities. This would be an example of measuring an earthquake by:
Definition
intensity
Term
Tsunami's are produced by

Which one?

submarine earthquakes
Submarine landslides
Volcanoes at sea
Definition
All of the above
Term
What is the main thing that we can investigate and study to help get a vicinity of when an earthquake could happen?
Definition
History of the area
Term
When a material is subjected to a certain stress and the material cracks and breaks, the material has under went what type of strain?
Definition
fracture
Term
[image]
Definition
B is an example of a normal fault
Term
Why is the geologic feature called a dome more like an anticline than a syncline?
Definition
because the older rocks are in the middle
Term
[image]
Definition
Dip angle= 40 and Strike Angle= can't tell
Term
[image]
Definition
At point C an object would weigh less
Term
Would an object sitting at the top of Mount Everest weigh less than the same object at Panama City Beach, Florida?
Definition
less
Term
What type of earthquake will cause more damage?
Definition
Shallow Focus
Term
Why is understanding different kinds of stress important in geology?
Definition
because different stresses causes different types of folds.
Term
What process is used to locate the epicenter of an earthquake?
Definition
Triangulation
Term
What can cause an earthquake of magnitude 7 be more destructive at one location compared to another?


Time of occurrence
population density
types of bedrock
Definition
all of the above
Term
Are Tsunami's just another form of a tidal wave?
Definition
no
Term
The controlling force of mass wasting is
Definition
gravity
Term
The transfer of rock material downslope under the influence of gravity is termed
Definition
mass wasting
Term
Slump is a slow moving mass movement
Definition
True
Term
The slope material's strength and cohesion, the amount of internal friction between grains, and any external support of the slope is defined as the slope's ________
Definition
shear strength
Term
What characteristics influence mass wasting?

water within slope
overloading
geology of area
earthquakes in area
Definition
all of the above
Term
[image]
Definition
C would have more of a chance of having mass movement of material
Term
The following ways can be used to minimize mass wasting?

Which ones?

Benching
Rock bolts
cut and fill
Definition
all of the above
Term
Creep, the slowest can be recognized by

Which ones?

curved tree trucks
tilted power poles
by a seismograph
by a tiltmeter
Definition
curved tree trunks and tilted power poles
Term
The release of water vapor into the atmosphere by plants is called
Definition
transpiration
Term
Which of the following does not influence stream velocity?

discharge
laminar flow
channel size and shape
gradient
channel roughness
Definition
laminar flow
Term
[image]
Definition
main erosion occurs on the outside of the bend
Term
A river originates 400 meters above sea level and travels 200 kilometers to the ocean. What is the average gradient in meters per kilometers?
Definition
2.0 m/km
Term
The continuous movement of water from the oceans to the atmosphere, from the atmosphere to the land, and from the land to the sea is known as
Definition
Water cycle/ hydrologic cycle
Term
What is the driving force/mechanism behind the water cycle?
Definition
solar energy
Term
The rate at which surface material absorb water is called
Definition
infiltration capacity
Term
Which of these factors influence infiltration capacity

the earth's rotation
intensity of precipitation
the tides
all of the above
Definition
intensity of precipitation
Term
The kind of energy that flood water behind sand bags possess is called
Definition
Potential
Term
What causes a particle to be either suspended load or bed load?
Definition
The speed of transportation
Term
[image]
Definition
B would more than likely have the fastest velocities if all other characteristics are in equilibrium
Term
The total volume of water moving past a particular point within a given amount of time is called
Definition
discharge
Term
As a stream's discharge increases
Definition
velocity, width, and depth increase
Term
Calculate the following streams discharge?

Velocity= 10 meters per second
Depth= 2 meters
Width= 5 meters
Definition
100 cubic meters per second
Term
The most common river channel drainage pattern and the one that resembles a tree branch is called
Definition
dendritic drainage
Term
[image]
Definition
A would have a higher porposity
Term
The boundary between the zone of aeration and the zone of saturation is the
Definition
water table
Term
When water is pumped from a well is pumped from a well, a depression is often produced in the water table. Such depression is
Definition
cone of depression
Term
Well sorted and well rounded sands and gravel have a
Definition
high porosity and high permeability
Term
What type of lake can occur due to constant erosion of a meandering stream bank?
Definition
oxbow lakes
Term
Water will move
Definition
from high pressure to areas of low pressure
Term
A condition that is necessary for an ice mass to be classified as a glacier
Definition
flowing of the mass
Term
Glaciers can cause heavy

What?

Erosion of sediment
transport of sediment
deposition of sediment
Definition
all of the above
Term
Of the two types of glaciers which type covers the most area?
Definition
continental
Term
Which of the following are glacial erosion and transport methods?

plucking
abrasion
bulldozing
sheet flow
Definition
plucking, abrasion, and bulldozing
Term
Is wind or water more capable of carrying sand as a suspended load?
Definition
Water
Term
The removal of loose surface sediment by wind that leaves shallow depressions is called
Definition
deflation
Term
Of the two types of wind deposits which are deposited over large areas downwind from source
Definition
Loess
Term
What type of weather in desert?
Definition
arid and hot
Term
What erosional agent causes the most erosion in a desert?
Definition
water
Term
[image]
Definition
C is where the stream/river velocity would be the fastest
Term
The surface of the oceans rise and fall daily in response to gravitational attraction of the moon and sun. What do we call the rise and fall tides?
Definition
rise= flood tide
fall= Ebb tide
Term
If you want your local beach to contain the same amount of sand and look the same each year, you would want a _______ nearshore sediment budget.
Definition
balanced
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