Show:
Plate Tectonics
Plate Tectonics
Earthquakes
Volcanoes
Mountain Building
100
Two plates moving together
What is a convergent boundary?
100
occurs when an oceanic plate subducts beneath another oceanic plate.
What is a volcanic Island Arc?
100
the vibration of Earth produced by the rapid movement and release of energy of plate tectonics
What is an earthquake?
100
an opening in the Earth's crust through which molten rock, gases, and ash erupt as well as the landform that develops around the opening
What is a volcano?
100
A large mass or rock that rises a great distance above its base.
What is a mountain?
200
two plates move away from each other
What is divergent boundary?
200
Once oceanic plate is forced down into the mantle beneath a second plate
What is a subduction zone?
200
the point within the earth where the earthquake started
What is a Focus?
200
Ash cloud, Lahar, toxic gases
What are volcanic hazards?
200
most of the worlds mountains occur in long belts that tend to follow convergent plate boundaries
What are mountain belts?
300
Two plates moving past each other
What is a transform boundary?
300
Mountains formed by volcanic activity caused by the subduction of oceanic lithosphere beneath a continent
What is Continental Volcanic Arc?
300
the location of the surface directly over the focus
What is the epicenter?
300
A weak portion of the crust allows magma to rise to the surface.
What is a hot spot?
300
A boundary between continental crust and oceanic crust
What is a continental margin?
400
Deep faulted structures found along the axes of some segments or ocean ridges
What is a rift valley?
400
the process by which plate tectonics produces new oceanic lithosphere
What is Seafloor spreading?
400
instruments that record earthquake waves
What is a seismograph?
400
Whenever two plates collide and create a subduction zone, the volcano forms over the overriding plate
How do volcanoes form at convergent boundaries?
400
Margins occuring along plate boundaries
What is an active continental margin?
500
Plates gfrind past each other without destroying the lithosphere
What is Transform fault boundary?
500
Elevated Seafloor
What is an Ocean ridge?
500
Seismic Sea waves
What is a Tsunami?
500
Magma rises up as two plates move away from each other... this is because the magma is less dense and rises to the surface of the crust.
How do volcanoes form at divergent boundaries?
500
Mountain building that do not occur along plate boundaries
What is an Passive continental margins?