Destructive Plate Boundaries Flashcards
What happens at destructive plate boundaries
Plates moving towards each other
What plates are at destructive plate boundaries
Continental and oceanic plates
What happens to oceanic plate
It is denser so it is forced beneath the continental plate
Where does oceanic plate go when forced underneath continental plate
Subduction zone
What happens when it enter the subduction zone
Melts to form magma
Earthquakes are triggered
When oceanic plate melts to form magma in subduction zone what happens
Magma collects to form magma chamber
Rises through cracks in continental plate crust
Pressure builds
Volcanic eruption may occur
As plates push together what plate is squashed
Continental crust
What happens when continental plate is squashed
Forced upwards
Squashing and forcing upwards of continental plate is called
Folding
What does process of folding create
Fold mountains
How can fold mountain also be formed
When 2 continental plates push towards each other
Example of mountains formed by folding
Alps
Himalayas
Define convection current
Movement within Earths mantle caused by heat of core
Define magma
Mixture of molten or semi molten rock
Found beneath surface of earth
Define magma chamber
Region under surface of earth where hot molten magma collects
