global distribution Flashcards
What is global distribution?
The distribution of large-scale ecosystems (biomes ) is determined by climate.
What are causes of earthquakes, volcanic eruptions and tsunamis?
earthquakes and volcanic eruptions are caused by tectonic plate movements. Tsunamis are a secondary effect caused through earthquakes and volcanic eruptions.
What causes plate boundaries to move?
they move from the heat fro radioactive processes within the planet’s interior.
what is a intra-plate earthquake
a variety of earthquake that occurs within the interior of a tectonic plate; this stands in contrast to an interplate earthquake, which occurs at the boundary of a tectonic plate.
destructive plate margin
two plates move towards another. One plate is then pushed underneath the other.
constructive plate margin
the plates move apart from one another.
collison plate margin
can cause the edges of one or both plates to buckle up into a mountain ranges or one of the plates may bend down into a deep seafloor trench
transform plate margin
As the plates rub against each other, huge stresses can cause portions of the rock to break, resulting in earthquakes.
Benioff zone
Zone of earthquakes along a subduction zone which results from the oceanic crust being thrust underneath the continental crust. It is characterized by shallow focus earthquakes near the oceanic trench and progressively deeper earthquakes inland.
P waves
P waves cause the ground to compress and expand, that is, to move back and forth, in the direction of travel