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Layers of the Earth
Volcanoes
Earthquakes
Moving Plates
Vocabulary
100
Waves that move the quickest because they squeeze forward.
What are compressional waves?
100
The type of boundary most volcanoes are caused by.
What is divergent plate boundary?
100
The most common type of plate boundary that causes Earthquakes.
What is a transform boundary?
100
The well-accepted theory behind what the cause of moving plates.
What is the Theory of Plate Tectonics?
100
The density driven process of heating from below and cooling from above.
What is convection?
200
Waves that move slower because they move side to side.
What are shear waves?
200
Liquid rock still inside the volcano.
What is magma?
200
The fracture caused by rocks at stress.
What is a fault?
200
The name of the super-continent when all the plates used to be one large landmass.
What is Pangea?
200
When one plate slides UNDERNEATH another plate, ususally occuring between an oceanic plate and a continental plate.
What is subduction?
300
Inner Core, Outer Core, Mantle, ____________.
What is the crust?
300
Liquid rock outside of the volcano.
What is lava?
300
The name of a fault in California between two plates that are sliding past each other.
What is the San Andreas fault?
300
Geographic fit of the continents and distribution of fossils
What evidence did Alfred Wegener use to support his Theory of Plate Tectonics?
300
At a divergent plate boundary, the ocean floor is moving apart.
What is sea floor spreading?
400
The layer of the Earth that is really solid, even though it appears liquid-like.
What is the mantle?
400
The combination of ash, gas and rock that sometimes occurs before a volcanic eruption.
What is pyroclastic flow?
400
What waves carry with them as they are released from an earthquake.
What is energy?
400
New crust forms and spreads apart
What is a divergent boundary?
400
Rock stress that leads to a reverse fault.
What is compression?
500
The lithosphere and athenosphere remain separate because they have
What is different densities?
500
This famous chain of islands was made from a serious of hot spot volcanoes.
What is Hawaii?
500
The location where most earthquakes occur
What is along plate boundaries?
500
The cause of plate movement.
What is convection?
500
The deepest layer of the Earth.
What is the inner core?