Plate Margin Flashcards
What happens at Destructive plate margin?
2 plates converge together and some of the earth’s crust is destructed
the oceanic plate which is dense, subducts beneath the less dense continental plate
What are found at Destructive plate margins?
Earthquakes, volcanoes, fold mountains and ocean trenches
Give an example of a Destructive plate margin.
The Nazca plate subducted beneath the South American Plate.
What happens at a Conservative plate margin?
2 plates are moving in the same or opposite direction the past each other
stress energy builds up as plates slide, parts of the plates get stuck then launch free
What do you find at Conservative plate margins?
Earthquakes
Give an example of a Conservative plate margin
The San Andreas fault and the fast moving Pacific plate sliding in the same direction as the slow moving North American plate.
What happens at a Constructive plate margin?
2 plates move apart
a gap appears
lava escapes through the gap, usually as a gentle eruption
creates a mid-ocean ridge (underwater mountain ridge)
What do you find at a constructive plate margin?
volcanoes
give an example of a constructive plate margin
The Mid-Atlantic ridge/North American Plate moving away from the Eurasian plate.
what is a plate margin/what does it do?
A plate margin marks the point where two of the earths tectonic plates meet. At these poets the Earth’s crust is either destroyed or created.
what do you not find at a constructive plate margin?
fold mountains
trenches
