Shared Flashcard Set

Details

Exam 2
study questions for geology exam 2
51
Geology
Undergraduate 1
10/11/2010

Additional Geology Flashcards

 


 

Cards

Term
what is an isotope
Definition
atoms of the same element with varied number of neutrons
Term
What is an ionic bond
Definition
An ionic bond is a type of chemical bond that involves a metal and a nonmetal ion through electrostatic attraction.
Term
What is a metallic bond?
Definition
Metallic bonding is the electromagnetic interaction between delocalized electrons and the metallic nuclei within metals.
Term
Why are Sulfide Minerals and environmental hazard?
Definition
sulfate mixes with oxygen and water forming sulfuric acid in coal mines
Term
what is an intrusive igneous rock?
Definition
an igneous rock formed beneath the earth's surface (large crystals)
Term
What is an extrusive igneous rock?
Definition
an igneous rock formed above the earth's surface (small crystals)
Term
How would one tell the difference between intrusive and extrusive igneous rocks?
Definition
Intrusive rocks have large crystals while extrusive rocks have small crystals
Term
What is the difference between organic sedimentary rocks and chemical sedimentary rocks?
Definition
Organic sedimentary rocks contain materials generated by living organism, while Unlike most other sedimentary rocks, chemical rocks are not made of pieces of sediment. Chemical sedimentary have mineral crystals made from elements that are dissolved in water.
Term
What is a Plastic Deformation
Definition
Permanent deformation caused by flowing and folding at stresses above the elastic limit at high confining pressure and/or temperature. Slow forming-bends
Term
what is a characteristic of fast deformations?
Definition
break-brittle
Term
what is a characteristic of slow deformations?
Definition
bends
Term
what is the bending of rock called?
Definition
folding
Term
What is the difference between a joint and a fault?
Definition
joint- there is little to no lateral movement across joints. fault - a fracture in rock in which one side slides laterally past the other with a displacement that is greater than the separation between the blocks on either side of the fracture.
Term
What is an unconformity?
Definition
An unconformity is a buried erosion surface separating two rock masses or strata of different ages, indicating that sediment deposition was not continuous.
Term
What kind of stress causes a rock to fold?
Definition
compression
Term
What is limestone?
Definition
Limestone is a sedimentary rock composed largely of the minerals calcite and/or aragonite, which are different crystal forms of calcium carbonate.
Term
Intrusive igneous rock IS/IS NOT made up of slowly cooled magma.
Definition
IS
Term
What is the grain size of intrusive igneous rock?
Definition
large
Term
What is the definition of a species?
Definition
A group of individuals capable of interbreeding
Term
what is a population?
Definition
a group of individuals of the same species in an area
Term
what is a community
Definition
a group of the populations of different species in the same area
Term
what is a biota
Definition
all organisms living in an area or region
Term
what is a biosphere
Definition
the part of earth where organisms exist and function
Term
what is ecology
Definition
study of relationships between living things and their enviorments
Term
what is an indigenous species
Definition
a species found in an area where they evolved
Term
what is a exotic species?
Definition
a species brought into an area or a region by humans
Term
what is an invasive species?
Definition
an exotic species that competes with indigenous species and displaces them
Term
what is a natural indigenous ecosystem?
Definition
an ecosystem that is a result of completely natural evolutionary processes, rarely exists
Term
what is a human modified ecosystem
Definition
it is an ecosystem that is modified by human use and interest, almost all the major ecosystems
Term
what is a human constructed ecosystem?
Definition
it is a man-made ecosystem for many different purposes at many sites, such as ponds, canals
Term
what is a keystone species?
Definition
a species exerting a stronger community effect disproportionate to their abundance.
Term
Intrusive igneous rock IS/IS NOT made up of slowly cooled magma.
Definition
IS
Term
Why does the US have more tree diversity than Europe?
Definition
something to do with birds mountains and possibly earthquakes in europe?
Term
What happened when wolves were reintroduced into yellowstone?
Definition
They killed animals that were fucking up the streams and creeks allowing for plant growth and biodiversity.
Term
What happened when sea otters were reintroduced into alaska?
Definition
Reintroduction of sea otters to British Columbia has led to a dramatic improvement in the health of coastal ecosystems - killed the sea urchins
Term
Why did the kissimmee river need restoration?
Definition
humans channelized that bitch and fucked up all the biodiversity, now they are trying to get it back the way it was before, but its destined to go back to being channeled and shitty.
Term
What is the main thing humans need to do for a successful restoration of the everglades?
Definition
GTFO of the area.
Term
what did humans do to severely hurt the everglades?
Definition
drained the wetlands
Term
Tree roots CAN/CANNOT help reduce landslides
Definition
CAN
Term
A disturbance in the ecosystem CAN/CANNOT help increase biodiversity
Definition
CAN
Term
Sea walls DO/DO NOT decrease biodiversity
Definition
DO
Term
Wolves and Sea Otters are examples of what kind of species?
Definition
Keystone
Term
what is ecological restoration?
Definition
the study and practice of renewing and restoring degraded, damaged, or destroyed ecosystems and habitats in the environment by active human intervention and action.
Term
The Ice plant in Santa Barbra REDUCED/INCREASED biodiversity
Definition
REDUCED
Term
What is the most abundant mineral in the earth's crust?
Definition
quartz
Term
Why is limestone so susceptible to chemical weathering?
Definition
it is a carbonate
Term
what is the law of superposition?
Definition
the old rocks go on the bottom, the young rocks go on top
Term
What is a chemical sedimentary rock?
Definition
Unlike most other sedimentary rocks, chemical rocks are not made of pieces of sediment. Instead, they have mineral crystals made from elements that are dissolved in water.
Term
what is a low grade metamorphic rock that is commonly used?
Definition
clay
Term
plastic and ductile deformation DO/DO NOT cause folding
Definition
DO
Term
what is the law of cross cutting relationships?
Definition
The principle of cross-cutting relationships states that an igneous intrusion is always younger than the rock it cuts across.
Supporting users have an ad free experience!