Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
64 Cards in this Set
- Front
- Back
Color
|
The most unreliable diagnostic property is
|
|
Silicate
|
Which group of minerals are the most abundant in the earth's crust.
|
|
Silicon and oxygen
|
All silicate minerals contain wich two elements
|
|
Cleavage
|
The strong tendency of certain minerals to break along smooth,parallel planes
|
|
hardness
|
the resistance of a material to abrasion
|
|
Diamond
|
Hardest mineral in nature
|
|
obsidian
|
glassy texture
|
|
igneous formed
|
cooling of magma
|
|
Course grained
|
Rocks with crystals that can be seen with naked eye.
|
|
Limestone
|
most abundant chemical sedimentary rock
|
|
Gneiss
|
alternating bands of light
|
|
Oxygen
|
what element is the most abundant in earth's crust by weight
|
|
Ions
|
Atoms that have an electrical charge due to the loss or gain of an electron
|
|
Crystals become smaller
|
As the rate of cooling increases
|
|
Heat
|
Primary agent of contact metamorphisim
|
|
Foliation
|
strong parallel alignment of mineral bands in a metamorphic rock
|
|
Porphrytic
|
Igneous rock characterized by two distinctively different crystal sizes.
|
|
Particle size
|
Detrital sedimentary rocks are classified primarily on the basis of
|
|
Warm humid
|
Chemical weathering would be most effective in a ________ climate
|
|
Warm temperatures very moist
|
What two factors speed up rates of chemical reaction & weathering in rocks and soils.
|
|
Mass wasting
|
the process that moves weathered rock materials and soils downslope
|
|
Most temperate climates
|
In what area would weathering by frost wedging be most effective
|
|
Creep
|
mass wasting process with the slowest rate of movment
|
|
Transpiration
|
The release of water to the atmosphere by plants is called
|
|
The main erosion is on the outside of the bend
|
at a bend in a river , the main erosion is
|
|
Capacity
|
describes the total sediment load transported by a stream
|
|
If you were to examine the profile of a typical river,you would probably find that the gradient is steepest
|
near the bed
|
|
an abandoned,cutoff,meander loop.
|
Oxbow lake
|
|
running water
|
the single most important erosion all agent
|
|
aquifier
|
permeable rock strata or sediment that transmit groundwater freely
|
|
water table
|
The ground is saturated with water in unsaturated rock
|
|
artesian well
|
an artesian aquifer confined containing groundwater
|
|
stalactite
|
Is the Icicle like shape that grows down from the roof of a cavern
|
|
Alfred wegnee
|
In the early part of the 20th century blank argued forcefully 4 continental drift.
|
|
pangea
|
The former late Paleozoic supercontinent is known as
|
|
Divergent
|
Pull apart rift zones are generally associated with _____plate boundaries
|
|
A typical rate of seafloor spreading in the Atlantic Ocean is _____per year
|
The sea floor in the alantic ocean spreads 2cm
|
|
Identify mechanisims capable of moving continents
|
The continental drift hypothesis was rejected primarily because Alfred Wegener could not
|
|
Sinking of oceanic lithosphere into the mantle at a subduction zone.
|
Deep open trenches are sufficient evidence for
|
|
Transform plate boundary
|
The deep vertical fault which two plates slide past one another
|
|
volcanoes and deep valleys of East africa
|
Continental rift along which parts of the African continent are beginning to slowly separate
|
|
Focus
|
When an earthquake occurs energy gradients in all directions from its source the source is also referred to as the
|
|
Nature of surface material design of structures tensity and duration
|
The amount of destruction caused by earthquake vibrations is affected by
|
|
aftershocks
|
Major earthquakes are often followed by somewhat smaller events known as
|
|
Richter scale
|
Scale is a measure of the energy released it is not directly measure the extent of the building damage
|
|
epicenter
|
The position on Earth's surface directly by the earthquake source is called the
|
|
elastic rebound
|
The mechanism by which rock store and eventually release energy in the form there's an earthquake is termed
|
|
liquefaction
|
Refers to the tendency for a foundation material to lose its internal cohesion and failed mechanically during earthquake shaking
|
|
seismagram
|
Record of an earthquake obtained from a seismic instrument is
|
|
iron
|
The dense core of the earth is thought to consist predominantly of
|
|
pahoehoe
|
Which type of basaltic lava flow has a fairly smooth unfragmented ropey surface
|
|
basaltic
|
what Magma is the most abundant type rupted at oceanic spreading centers today
|
|
pacific
|
The _______ocean basin is rimmed by the most abduction zones
|
|
composite cones
|
The most violent volcanic activity is associated with
|
|
Shield volcano
|
Kilauea
|
|
water and Co2
|
______Are usually the most abundant gases emitted during basaltic volcanisim
|
|
AAaa
|
Which type basaltic lava flow has its surface covered with sharp edged angler blocks and rubble
|
|
submarine,basaltic lava flows
|
What which kind of volcanism is typical of mid oceanic ridge systems
|
|
an explosive strata volcano
|
Mount st helens is
|
|
the circum pacific area
|
Which region has the greatest concentration of currently active volcanoes
|
|
strike slip
|
An_____ fault has little or no vertical movements of the two blocks
|
|
transform fault
|
a strike slip fault that lays the boundary between tectonic plates
|
|
thrust fault
|
A low angle reverse fault
|
|
normal faults
|
Tensional forces normally cause what type type of faults
|