Share Earth's Interior and Plate Tectonics Test Review
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What happens to older oceanic rock as new rock is formed during sea floor spreading?
gets pulled/pushed away from the mid ocean ridge
What events happen most frequently along tectonic plate boundaries?
earthquakes and volcanoes
What causes a plate to be subducted?
the density...more dense plate subducts
What best explains identical rock types, identical fossils, and similar mountain features on different continents?
they were once joined together
Name the three types of plate boundaries
convergent, divergent, transform
What caused the high mountains of the Himalayas?
colliding tectonic plates
What causes the plates to move in Continental Drift and Sea-Floor Spreading?
convection currents in the mantle
Rift Valleys occur at what kind of plate boundary?
divergent
What kind of boundary creates new crust?
divergent
What kind of boundary recycles crust back into the mantle?
convergent
Why do earthquakes occur near the San Andreas Fault?
plates get stuck and suddenly move
What type of seismic wave will reach a seismograph first?
P waves
What type of wave cannot travel through the liquid outer core?
S waves
Why is the inner core solid?
pressure
Why might a seismograph pick up seismic waves from an earthquake?
waves got bent away or stopped by core
Why didn't scientists believe Alfred Wegener's theory
He couldn't tell what made the continents move
