Plate Tectonics
Earthquakes
Volcanoes
Miscellaneous Vocabulary
Fill in the Blank
100
The person who suggested that all the continents were all connected as one large landmass
What is Alfred Wegener
100
The instrument that measures seismic waves
What is a seismograph
100
An opening in Earth that erupts gases, ash, and lava
What is a volcano
100
The large landmass that means "all land"
What is Pangaea
100

A ____ is a vent in the earth from which magma flows out of

What is a volcano?

200
The theory that states that Earth's crust and part of the upper mantle are broken into sections
What is plate tectonics
200

The waves that are generated by an earthquake

What is seismic waves

200

An area where Earth's plates are moving apart

What is Divergent Plate Boundary

200
A steep-walled depression around a volcano's vent
What is crater
200

The _________ is the measure of the energy that is released during an earthquake

What is the magnitude

300

The broken sections that move above the asthenosphere

What is plates

300

The scale that is based on the height of the lines from a seismograph that does not have an upper limit

What is the Richter Scale

300

The large, steep-sided volcanoes also called stratovolcanoes.

What are composite volcanoes?

300
Where oceanic and continental plates collide and the oceanic plate plunges beneath the less dense continental plate
What is subdution
300

When molten rock is forced up through breaks in the crust not at plate boundaries it forms a _______

What is a hot spot?

400

The softened layer below the lithosphere

What is asthenosphere

400
The seismic wave that causes the most destruction
What is Surface Waves
400

The type of volcano that formed in the Mexican corn field.

What is a cinder cone volcano?

400
When volcanic ash and debris rush down the side of the volcano
What is pyroclastic flow
400

The ________________ in the Pacific is the most active volcanoes in the world.

What is the Ring of Fire?

500
When continental plates pull apart, they can form this.
What is a Rift Valley
500
When the earthquake causes wet soil to act more like a liquid
What is liquefaction
500
The volcano that erupted causing the island to disappear
What is Krakatau
500

A liquid's resistance to flow

What is viscosity?

500
____________ proposed the theory about seafloor spreading
What is Harry Hess
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