Continental Drift
Plate Tectonics
Earthquakes
Earth's Interior
Volcanoes
100
This is the most apparent match of continents: the eastern coastline of South American with the western coastline of this continent.
What is Africa?
100
This is the spreading apart of plates.
Divergence/Divergent Boundaries
100
These are the types of waves that cause earthquakes.
What are seismic waves?
100
A boundary that marks a density change between layers.
What is discontinuity?
100
Volcanos can have these 3 types of eruptive products.
What are solids, liquids, and gases?
200
Wegener reasoned that Earth's rotation, gravity from the sun and mooon, and this could move continents.
What is Centrifugal Force?
200
What is formed when plates collide and the come together.
Convergent boundaries
200
Shear, Tension, & Compression
What are types of stress?
200
The weaker layer upon which Earth's lithospheric plates move.
What is the asthenosphere?
200
The measure of the resistance of a fluid to flow.
What is viscosity?
300
The spreading of the ocean floor.
What is divergence?
300
Horizontal motion of the lithosphere.
What is are transform boundaries?
300
When the motion of a P=wave is in the direction of travel, that motion is very ________.
What is fast?
300
Between 105 and 140 degrees from the epicenter, nothing is recorded. This is called what?
What is the shadow zone?
300
When the primary eruptive products are large fragments of solid materials, these form.
What are cinder cone volcanoes?
400
This is formed where two oceanic plates are forced apart due to magma rising from Earth's mantle.
What is the MOR, Mid-Ocean Ridge?
400
This is the driving force for all mechanisms of plate motion.
What is thermal energy?
400
Richter magnitude measures this quality of earthquakes.
What is energy?
400
The bending of a wave as it changes speed in moving from one medium to another.
What is refraction?
400
These erupt with abundant lava flows that can move for km over Earth's surface.
What are shield volcanoes?
500
Formed along the mid-ocean ridge as plates diverge.
What is a rift-valley?
500
This is the major importance in relative plate motion.
What is friction?
500
S-waves do not appear on seismograms more than THIS AMOUNT from an epicenter.
What is 105 degrees?
500
Earth's layers become THIS with depth.
What is denser?
500
Types of volcanoes that are composed of alternating layers and are very large.
What are composite volcanoes?
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