Eartquakes
Plate Tectonics
Volcanoes
Continential Drift
Mystery
100
The vibration of earth produced by the rapid release of energy
What is an earthquake
100
the uppermost mantle along with the overlying crust, is known as the lithosphere
What is Plate tectonics theory
100
the measure of a materials resistance to flow
What is viscosity
100
Created the hypothesis that continents had once been joined to form a single continents called pangaea
What is Alfred wegener
100
the natural remnant magnetism left in rock bodies
What is paleomagnetism
200
fractures in the earth where movement has occurred
What is a fracture
200
causes rift valleys
What is divergent boundaries
200
a depression at the summit of a volcano
What is crater
200
evidence: glaciers covered most of the southern hemisphere
What is Ancient climates
200
when rocks show the opposite magnetism as the present magnetic field
What is reverse polarity
300
small earthquakes that comes days or years before the major earthquake
What is a foreshock
300
causes elevated seafloor along well developed boundaries
What is ocean ridges
300
earths natural temperature increases with depth but is not sufficient to melt rock in the lower crust/upper mantle
What is geothermal
300
evidence: the similary between coastlines of South America and Africa?
What is continental puzzle
300
a concentration of heat in the mantle.
What is hot spot
400
surface location directly above where an earthquakes originates
What is an epicenter
400
less dense continental plate floats while the denser plate sinks
What is oceanic continental boundaries
400
instrusive igneous structure that results from the cool & hardening of magma beneath the surface of earth
What is a pluton
400
evidence: Mesosaurus fossils
What is fossil matching
400
where the great earthquake of 1906 in San Francisco happened
What is The San Andreas Fault
500
a seismic wave that shakes perticles perpendicular to the direction the wave is traveling
What is s waves
500
when spreading centers develop within a continent, the land mass may split into two or more smaller segments,forming a rift
What is continental continental
500
Convergent plate boundaries Divergent plate bounadries Interplate boundaries
What is 3 regions where volcanoes can form
500
evidence:rock & structures os several mountain belts
What is matching mountain ranges
500
a phenomena that causes normally stable ground to behave like a liquid
What is liquefaction
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