geo post test Flashcards
Where would the youngest oceanic crust be found?
Along Mid-Ocean Ridges
What kind of rock would you expect to find in an area once covered in water?
Sedimentary rock
Process of Sedimentary rock turning to Metamorphic rock
Heat and Pressure
Which rocks are the youngest ( horizonal way)
The one on top
Key difference between rock and mineral
Minerals have unique chemical compostion
If the present day tectonic processes continue, which scenario will NOT occur
Indian landmass will get bigger
The principle of superpositon states that undisturbed rocks
oldest are on the bottom and newest are on top
where do convection currents occur
the athenosphere
areas with many earthquakes and volcanos are usually
along plate boundaries
What to fossils show?
clues about earths past, support continental drift, used to determine the relative age of surronding rocks, tell us about extinct organisms
the matter of rocks
are constantly being changed or recycled into other forms
One arrow moving up and one down
reverse fault
how did the continents move to their current positions
convection currents in earths crust
in earthquakes
the epicenter is directly above the focus
What boundary does not create earthquakes
Transform boundary
What idea supports the idea of sea floor spreading
Igneous rocks along mid- ocean ridges are younger than those farther from the ridges
Which is thicker or thinner? ( continental to oceanic)
Continental is thinner, oceanic is thicker
Most realistic way an Island in the middle of the Pacific ocean is formed
Formed at a hot spot
What type of eruptions do shield volcanos have
quiet eruptons because its low in silica
