Tectonics Flashcards
Oceanic crust
D. plate that is made up of more dense rock. It sinks easily due to its density and is constantly created at boundaries. It is ‘young/new rock’ and forms our ocean bed.
D. plate that is made up of more dense rock. It sinks easily due to its density and is constantly created at boundaries. It is ‘young/new rock’ and forms our ocean bed.
Subduction zone
E. where one plate is forced downwards below another plate and grinds past it causing huge amounts of friction and heat.
E. where one plate is forced downwards below another plate and grinds past it causing huge amounts of friction and heat.
Destructive plate boundary
B: where two plates are moving towards each other, one of which is continental crust and one is made of oceanic crust
B: where two plates are moving towards each other, one of which is continental crust and one is made of oceanic crust
Continental crust
C. this is a plate that is made up of less dense rock. Because it is less dense it doesn’t sink. It is exceptionally old and makes up our land surfaces
C. this is a plate that is made up of less dense rock. Because it is less dense it doesn’t sink. It is exceptionally old and makes up our land surfaces
Plate boundary
A. where two very large crustal plates meet on the earth’s surface. Earthquakes and volcanoes happen here.
A. where two very large crustal plates meet on the earth’s surface. Earthquakes and volcanoes happen here.
Fold mountains
G. are large mountain ranges formed by the collision and ‘folding’ of two plates as they plates continually push into one another.
G. are large mountain ranges formed by the collision and ‘folding’ of two plates as they plates continually push into one another.
Ocean trench
F. a particularly deep point of the ocean bed where the oceanic and continental crust have dragged each other downwards.
F. a particularly deep point of the ocean bed where the oceanic and continental crust have dragged each other downwards.
Constructive plate boundary
The tectonic plates move away from each other.
Conservative plate boundary
where two crustal plates slide past each other, and the movement of the plates is parallel to the plate margin
