Divergent Boundaries
what is a divergent boundary?
where two plates move apart or diverge
what is a convergent boundary?
where two plates come together, causing a collision where one plate is subducted
what is a transform boundary?
where plates slide past one another moving in opposite directions
where two plates meet
What is an earthquake ?
a sudden shaking of earths surface
What happens when continental plates move away from each other
rift valley
what is subduction?
when one plate slides under another
what happens to the crust at a transform boundary?
crust is neither created or destoryed
What is land like underneath earths surface?
no matter what is on top there will always be hard solid rock at the bottom
what happens when plates move ?
-earths surface slowly changes
-create and destroy ocean basins
-produce earthquakes and volcanoes
-form mountains and plateaus
what happens at the divergent plate boundary?
plates move away from each other
Is a continental plate more or less dense?
less
what is a real life example of a transform boundary?
the san andreas fault
what is the mantle made of?
soft solid layer of rock or magma
Why do the plates move ?
convection currents in the mantle drive plate movement.
what forms a divergent boundary between two oceanic plates ?
mid ocean ridge
What makes a volcano?
Continental and oceanic plate
where can you find transform boundaries?
canada / alaska / new zealand / california
What are the two different kinds of plates?
oceanic and continental crust / solid rock
What is earths outer layer made out of ?
hard solid rock
What geological feature is created by a Divergent Plate Boundary?
Rift Valleys / mid - ocean ridge
what geological feature can be created by a Convergent plate boundary?
mountain chain / sea floor trench
what is one geological feature that is created by a transform boundary?
earthquakes
what is pangea?
a super continent made of all the current continents together over 225 million years ago
how do tectonic plates interact?
they pull apart, slide past each other and collide