Plate Tectonics
Layers of the Earth
Earthquakes
Seismic Waves
Volcanoes
100
This is the idea scientists have concluded about how the crustal plates move.
What is the theory of plate tectonics?
100
This layer is made of two solid rock layers with molten rock in between them.
What is the mantle?
100
The vibrations of an earthquake are caused by this.
What is plate movement?
100
The particles in this type of wave move at right angles to the wave. (like electromagnetic waves)
What is a transverse wave?
100
Volcanoes form here.
What is openings between tectonic plates?
200
This is what causes the plates to move.
What is convection currents in the mantle.
200
This layer is the outermost layer of the Earth which is made of soil, rocks, and seabed.
What is the crust?
200
This is what we call a rip in the ground caused by an earthquake.
What is a fault?
200
The particles in this type of wave move parallel to the motion of the wave. (like a slinky moves)
What is a longitudinal (or compressional) wave?
200
Friction from plate movement causes rock to change into this.
What is magma?
300
These are the different ways plates can interact with each other.
What is move over, under, or slide past each other.
300
This layer is made of a solid ball of iron.
What is the inner core?
300
This is where most of the Earth's earthquakes occur.
What is where tectonic plates meet?
300
This is the top of a transverse wave.
What is the crest?
300
This causes a volcano to erupt.
What is pressure inside the earth?
400
This is what happens when two plates press together.
What is form mountains?
400
This layer is made of molten iron and nickel.
What is the outer core?
400
Also known as primary waves, these waves are the first waves of an earthquake.
What is a longitudinal(compressional) wave?
400
This is the distance from one compression to the next compression in a longitudinal (compressional) wave.
What is the wavelength?
400
This is what we call erupted magma.
What is lava?
500
This is the name given to the crust and the uppermost part of the mantle.
What is the lithosphere?
500
This is the most dense layer of the earth.
What is the inner core?
500
These waves cause the most destruction during an earthquake.
What is a secondary, or transverse, wave?
500
This is the distance from the resting place to the crest or from the resting place to the trough in a transverse wave.
What is amplitude?
500
These volcanoes with gentle slopes are formed by the quick flow of running lava.
What is a shield volcano?
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