GEO final
Geology 101 with Radebaugh at Brigham Young University
About this deck
By: Phoebe Romney
Created: 2010-12-07
Size: 27 flashcards
Views: 28
Created: 2010-12-07
Size: 27 flashcards
Views: 28
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Earth's Chemical Layers
Crust (Silicates)
Mantle (silicates)
Core (Iron)
Earth's Physical Layers
Lithosphere
Asthenosphere
Mesosphere
outer core
Inner core
Mineral
naturally occurring inorganic solid that has an exact chemical composition with an orderly internal arrangement of atoms generally formed by inorganic processes
How does solid rock become magma?
•decrease pressure
•change composition
•raise temperature
Composition of extrusive rock bodies
silica content
water
Viscosity of Extrusive Rock Bodies
volatile
temerature
What rock is source of 90% of economic earth products
sedimentary
Metamorphism
recrystallization
change in Temp
change in Pressure
change in fluid composition
occurs in an entirely solid state
Three Types of Differential Stress
Tensional-pulling apart
Compressional-squeezing together
shear-slipping twisting or wrenching
Weathering
physical and/or chemical alteration of rocks and minerals where the lithosphere, hydrosphere and biosphere meet
Factors that affect Stream Flow
discharge
gradient
velocity
sediment load
base level
Glacier
body of ice
located on land
that flows under it's own weight
two parts of a glacier
zone of accumulation- snow
zone of ablation - melt
What is required for a dune to form?
supply of sand
wind
place to form
What is an Eolian deposit?
a hill or ridge of sand deposited by wind
Desertification
deserts are formed by natural changes
desert margins are transitional
deserts may also develop due to human activity
Evidence of the Plate Tectonic Theory
•fits continents
•similar fossils and rock deposits
•evidence of climate change
•magnetic reversal patterns recorded
•seismic structure of subsurface
DIvergent Plate Boundaries
where two plates move away from each other
Convergent plate boundaries
where two plates move toward each other
Transform Plate Boundaries
where two plates move past each other
Focus of an Earthquake
precise underground spot at which rocks begin to rupture or shift
Epicenter of an earthquake
point on surface that lies directly above the focus
Two main kinds of Seismic Waves
Surface Waves
Body Waves
Two kinds of Body waves
P waves (primary, pressure)
S waves (secondary, Sheer)
Hotspots from Mantle plumes
source of lava is a plume
source is fixed, plate moves
Consequences of using Natural Resources
money
pollution
greenhouse gases
loss of habitat
mining
deforestation
exhaustion of resource
What are the spheres on earth
lithosphere
biosphere
hydrosphere
atmosphere
About this deck
By: Phoebe Romney
Created: 2010-12-07
Size: 27 flashcards
Views: 28
Created: 2010-12-07
Size: 27 flashcards
Views: 28
About StudyBlue
STUDYBLUE makes things that make you better at school.
Things like online flashcards with photos and audio.
Things like personalized quizzes and friendly reminders about when (and what) to study next.
Think of it as a digital backpack™: access to all of your study materials online and on your phone.
STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.
“Simply amazing. The flash cards are smooth, there are many different types of studying tools, and there is a great search engine. I praise you on the awesomeness.”
Dennis
Dennis