Sea floor spreading
Plate tectonics
Continental drift
Earthquakes
Random
100
what is a word for a plate going back into the mantle under another plate
What is subduction
100
what is a divergent boundary
What is when they move away
100
what is the theory of continental drift?
What is answers vary
100
what is the place called where an earthquake starts?
What is focus
100
do earthquake foci get deeper or shallower the farther from the trench?
What is deeper
200
this is the man who came up with sea floor spreading
Who is henry hess
200
boundary when plates move towards one another
What is convergent boundary
200
name two continents that fit together
What is africa and south america
200
what is the point on the surface above the focus?
What is the epicenter
200
who came up with the theory of continental drift?
Who is alfred wegener
300
What are the three pieces of evidence for sea floor spreading
What is magnetic strips, eathquake patterns, and ages of the sea floor rocks
300
this boundary is a destructive boundary
What is convergent boundary
300
what are the three pieces of evidence for continental drift
What is matching fossils, climate, and rock types/ages
300
why don't many earthquakes happen at great depths?
What is the rock is too hot, "liquidy" so doesn't break
300
convection currents rise because the mantle rock becomes
What is less dense
400
how many centimeters per year does the floor move?
What is five
400
what are the three types of convergent boundaries
What is oceanic oceanic, oceanic continental, continental continental
400
how would africa have evidence of an icy climate?
What is used to be down by the poles
400
describe P, and S waves, what can they travel through and which is faster?
What is p-liquid/solid S-solid, not liquid P is faster
400
which two layers make up the mantle
What is lithosphere and athenosphere
500
explain magnetic strips in the sea floor
answers will vary
500
how many "major" plates are there?
What is 12
500
why was wegener's hypothesis rejected
What is didn't have the mechanism
500
how have earthquakes helped us learn about earth's interior?
What is answers vary
500
this means great harbor waves (spelling counts)
What is tsunami
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