Layers of the Earth
Volcanoes
Earthquakes
Moving Plates
Vocabulary
100
All of the Earth's crust and a small portion of the upper mantle.
What is the lithosphere?
100
Liquid rock outside of the volcano.
What is magma?
100
The depth at which earthquakes occur.
What is the focus of an earthquake?
100
The well-accepted theory that combines sea floor spreading and continental drift to explain plate movement.
What is the Theory of Plate Tectonics?
100
The force that moves lithospheric plates; a density driven process of heating from below and cooling from above.
What is convection?
200
A portion of the upper mantle on which the lithospheric plates float.
What is the asthenosphere?
200
Liquid rock still inside the volcano.
What is magma?
200
Along plate boundaries
Where do most earthquakes occur?
200
The super-continent proposed by Wegener to support his theory of continental drift.
What is Pangea?
200
When one plate slides UNDERNEATH another plate, usually occurring between an oceanic plate and a continental plate.
What is subduction?
300
Inner Core, Outer Core, Mantle, ____________.
What is the crust?
300
Diverging boundaries, subduction zones, hot spots.
What are locations that volcanoes form?
300
The name of a fault in California between an oceanic plate and continental plate.
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 continental drift?
300
The changing of wave speed as waves move through different substances.
What is wave refraction?
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
The Great Rift valley is an example of this.
What is a divergent boundary?
400
Rock stress that leads to a reverse fault.
What is compression?
500
The Earth's crust and mantle have different _____.
What are densities?
500
This chain of islands was made from a serious of hot spot volcanoes.
What is Hawaii?
500
Western coast of South America and North America, Alaskan Islands, Japan
What is the Ring of Fire?
500
A divergent plate boundary, the cause of mid-ocean ridges.
What is sea floor spreading?
500
The location of the heat that drives mantle convection.
What is the inner core?
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