Layers of the Earth
Boundaries
Waves
Continental Drift and Seafloor Spreading
Volcanoes
100
What is the second layer of the earth?
The mantle
100
What is a divergent boundary?
When two plates are moving apart from each other
100
Where do most earthquakes happen?
Along fault lines
100
Who developed the theory of seafloor spreading?
Harry Hess
100
What is the most active volcano in the world?
Kilauea in Hawaii
200
What is the lithosphere?
The crust and upper mantle
200
What boundary builds up tension over time, then one day releases it with a sudden jerk of land?
Transform boundary
200
Which wave moves rocks from side to side
Secondary waves
200
Who developed the theory of continental drift?
Alfred Wegener
200
What is viscosity?
The measure of a material (lava or magma) resistance to flow
300
Name the earth's layers thinnest to thickest
crust, inner core, outer core, mantle
300
Name three types of convergent boundaries?
Ocean and ocean, Ocean and continental, Continental and continental
300
What's another name for surface wave?
L-waves
300
Where is the crust formed at?
ocean ridges
300
What is a pryroclastic flow?
fast moving current of superheated gas and rock
400
What is the outer core made of?
Iron and nickel
400
Where is the best-studied strike-slip?
San Andreas Fault in California
400
Name the waves in order of when they will hit the surface
Primary waves, Secondary waves, Surface waves,
400
What is the process by which the ocean floor sinks into the mantle
subduction
400
Give three facts about cinder cone volcanoes
very small, very violent, can appear quickly, appear in thin crustal areas
500
How is the inner core a solid if it is so hot?
The temperatures and pressures of the earth are so great that the metals are squeezed together and are not able to move
500
What three things are created by convergent boundaries of ocean and ocean crust?
Deep-ocean islands Trenches, mountains,
500
What is the study of earthquakes?
Seismology
500
Name the four pieces of evidence to the theory of continental drift
Puzzle like fit, Fossil evidence, Ancient climates, Rock features,
500
Name three facts about composite volcanoes
Quiet periods followed by violent explosive episodes largest of main types, found on subduction zones, pryroclastic flows,
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