Occurrences at Plate Margins Flashcards
What Happens at a Destructive Plate Margin? (Volcano)
An oceanic plate meets a continental plate in which they are moving towards each other. The denser oceanic plate is subducted beneath the less dense continental plate. As it sinks, it melts and makes magma called andesite.
What Happens at a Destructive Plate Margin? (Earthquake)
The sinking oceanic plate can stick to the continental plate, pressure builds up against friction causing earthquakes.
What Happens at a Constructive Plate Margin? (Volcano)
Where two oceanic plates are moving apart from each other. New oceanic crust is forming constantly in the gap created. The magma is injected between the two plates, as it cools it forms new oceanic crust. The magma is runny and so shallow sided volcanoes are formed.
What happens at a Constructive Plate Boundary? (Earthquake)
Earthquakes are caused by friction as the plates tear apart.
What Happens at a Conservative Plate Boundary?
As plates slide past each other, friction between them causes earthquakes. The plates can be moving in the same or different direction.
Why aren’t Volcanoes Formed at a Conservative Plate Boundary?
There is no opportunity for the magma to rise.
What Happens at a Collision Plate Boundary?
When two continental plates are moving towards each other, the plates are not dense enough to sink into the mantle. The plates buckle and form mountains. There are powerful earthquakes but no volcanoes.
List the Continental Plates.
Eurasian, Australian-Indian, Arabian Plate, Philippine Plate, Coco’s Plate, N. American Plate, S. American Plate and The African Plate,
List the Oceanic Plates.
Pacific Plate, Scotia Plate, Nazca Plate, Caribbean Plate and The Juan de Fuca Plate
Where in the World Can You Find a Destructive Plate Boundary?
The Pacific and Eurasian Plate, The Nazca and S. American Plates.
Where in the World Can You Find a Constructive Plate Boundary ?
The S. American and African Plate, The Eurasian and N. American Plates.
Where in the World Can You Find a Conservative Plate Boundary?
The Pacific and N. American Plates.
Where in the World Can You Find a Collision Plate Boundary?
The Indo-Australian Eurasian Plates.
