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Geol 102
Test 2
64
Geology
Undergraduate 1
10/25/2011

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Cards

Term
A tsumnami is ______ sea wave.
Definition
Seismic
Term
Type of seismic waves will travel ONLY through SOLIDS?
Definition
S-Waves
Term
S-Waves(secondary waves bc they come 2nd)
Definition
travel ONLY through solids
Term
P-Waves( primary waves bc they come 1st)
Definition
will travel through solids, liquids,or gases.
Term
Who was the geologist killed during the MT.St. Helens eruption that correctly predicted the lateral eruption?
Definition
David Johnson
Term
The phenomena was responsible for the destruction of all of the bridges along the Toutle River.
Definition
Lahar
Term
The FOCUS of an earthquake _____.
Definition
Is the primary point of rupture in the earth's crust.
Term
Lahar
Definition
A Lahar is a fast moving volcanic mudflow made up of ash and water.
Term
A FOCUS/ The epicenter
Definition
In the earth. the point ON TOP OF the earth's surface, directly above the focus.
Term
Deep-focus earthquakes occur in subduction zones because:
Definition
Brittle lithosphere is carried to deeper depth s in Subduction zones.
Term
Shallow-focus earthquake commonly occur where?
Definition
Along transform faults, such as the Sam Andreas fault in CA
Term
The time difference between the 1st arrival of P waves & the 1st arrival of S waves at a particular seismogragh recorder....
Definition
Is used to determine how far away the seismograph is from the focus of the earthquake.
Term
Earthquake related hazards include all of the following except:
Liquefaction
Landslides
Strong Winds
Seismic Sea Waves
Definition
Strong Winds
Term
Liquefaction
Definition
Quicksand-like condition arising in wet solids during earthquakes.
Term
Most of the structural damages from earthquakes worldwide is caused by
Definition
SURFACE waves
Term
A locked section of a fault is often identified by a
Definition
Seismic Gap
Term
Earthquake precursors(Before) except:
-Change in the ground's surface tilt
-Change in the frequency of seismic sea waves
-Change in electrical resistivity in rocks
Definition
Changes in frequency resistivity of seismic sea waves
Term
The New Madrid, Missouri fault zone is a high-risk area on the U.S. seismic-risk map because
Definition
it was the site of the LARGEST earthquake ever reported in the contiguous United States
Term
One is evidence of Liquefaction:
Tsunamis,or Sandboils/blows, or Fault scraps, or Surface waves
Definition
Sandboils/Blows
Term
Isotopes are
Definition
Atoms of the same element with different atomic masses
Term
In an Ionic Bond...?
Definition
Atoms are joined by ELECTRICAL charges.
Term
Sulfide minerals are potenial environmental hazards because...?
Definition
They can combine with oxygen and water to form SULFIDES
Term
Intrusive igneous rocks differ from extrusive igneous rocks primarily in their?
Definition
Crystal Size
Term
Detrital sedimentary rocks differ from chemical sedimentary rocks in their?
Definition
Detrital sedimentary rocks are composed of visible pieces of preexisting rocks.
Term
Plastic deformation result in?
Definition
Permanent change in shape of the rocks.
Term
main different between JOINTS & FAULTS is..?
Definition
Whether or not movement occurs
Term
Joints
Faults
Definition
J do NOT have displacement.
F DO have displacement.
Term
Unconformities represent...?
Definition
A gap in the geologic record
Term
T or F Rocks typically fold as a result of compressive stress.
Definition
True
Term
T or F Limestone is a detrital sedimentary rock
Definition
Fasle
Term
T or F Intrusive igneous rocks consist of slowly cooled magma.
Definition
True
Term
A group of individuals capable of interbreeding is called a?
Definition
Species
Term
The study of controls over the distributions & abundance of living things is called?
Definition
Ecology
Term
The dominant processes in an ecosystem are
Definition
Interactions of biota & geologic environment
Term
In indigenous ecosystem is one that..?
Definition
Is not substantially impacted by humans.
Term
Coastal marshes reduce flooding & coastal erosion. This impact is an example of?
Definition
natural service function of ecosystems
Term
Species with disproportionate influences on their ecosystems are called?
Definition
Dominant Species
Term
One result of wolf reintroduction in Yellowstone National Park is..?
Definition
regrowth of stream-side vegetation.
Term
Sea otter reintroduction in Alaska has led to...?
Definition
An increase in Kelp forests.
Term
The Kissimmee River in Florida needed restoration because of..?
Definition
Channelization
Term
Restoring the everglades ecosystem will require?
Definition
Controlling human population in South Florida
Term
What human activities have negatively impacted the Everglades?
Definition
Wetland draining
Term
T or F An ecosystem involves only living organisms in a region.
Definition
False
Term
Ecosystems can be constructed by humans
Definition
True
Term
T or F Tree roots can help reduce landslides.
Definition
True
Term
T or F Yellowstone National Park reduced stream-side willows by forcing the elk to take cover in the stream channels.
Definition
False
Term
T or F Sea urchins help preserve kelp in kelp forests.
Definition
False
Term
T or F Disturbance in an ecosystem can increase biodiversity.
Definition
True
Term
T or F Seawalls can decrease biodiversity by narrowing beaches.
Definition
True
Term
T or F The Kissimmee River ecosystem benefited greatly from stream channelization & flood control.
Definition
Fasle
Term
______ is the study of controls over the distribution & abundance of living things.
Definition
Ecology
Term
The orientation of mountain ranges influenced the diversity of ____ in Europe & North America.
Definition
Trees
Term
A_____ species has an effect on its ecological community disproportion to its abundance.
Definition
Exotic
Term
A_____ species has an effect on its ecological community disproportion to its abundance.
Definition
Exotic
Term
Wolves & sea otters are examples of _____ species.
Definition
Keystone
Term
________ is the process of altering a site or area with the objectives of reestablishing indigenous, historical ecosystems.
Definition
Ecological Restoration
Term
Introduction of an ________ plant species reduced biodiversity of small dunes & the University of California, Santa.
Definition
Exocit
Term
______is hard mineral that is one of the most abundant minerals in the Earth's crust.
Definition
Quartz
Term
Limestone is prone to chemical weathering because it consists of mineral from the____group.
Definition
Carbonate
Term
The law of_____states that the oldest layers are on the bottom of a sequence of sediment layers that have not been deformed.
Definition
Superposition
Term
______sedimentary rocks are formed from the precipitation o substances dissolved in water.
Definition
Chemical
Term
______ is a low-grade metamorphic rock with many important uses.
Definition
State
Term
_______ deformation causes folding.
Definition
Plastic
Term
The law of____ states that a rock is younger than any other rock that it crossers.
Definition
Cross-Cutting Relationships.
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