Convergent Boundaries
A Convergent Boundary is...
When tectonics plates collide
A Divergent Boundary is...
When tectonics plate move apart from eachother.
A Transform Boundary is...
When tectonic plates slide past eachother.
What ocean is the deepest mid-ocean ridge located in?
The Atlantic Ocean.
What layer of the earth does magma rise from?
The mantle
What natural disaster can a convergent boundary create?
An earthquake
Between two continents is an ocean ridge, what is this ocean ridge called?
Do transform boundaries move vertically or horizontantally?
Horizontally.
What is an extinct seamount called?
A guyot.
What layer do transform boundaries reach?
The mantle (lithosphere)
What are two examples of land forms created by convergent boundaries?
Deep ocean trench, volcanoes, mountains, trench-volcanic arcs (a chain of volcanoes)
What natural disaster can occur as plates diverge?
Earthquakes.
Do transform boundaries create new crust?
No
A seamount is...
A large mountain on the seafloor.
What crust do convergent boundaries effect?
Oceanic and continental
What happens at an oceanic-oceanic convergent boundary?
Deep sea trenches are created (or volcanic chains are created)
What land forms do divergent boundaries create?
New oceanic crust, rift valleys, islands.
Transform boundaries create what?
Valleys, ridges, underwater canyons.
What two continents are located closest to the Mid-Atlantic Ridge?
North America and Europe
What two layers of the earth do plate tectonics take place in?
Crust and Mantle. (and core)
What happens at a continental-continental convergent boundary?
It creates mountain ranges.
When magma builds up at a divergent boundary, what happens?
What is the fault in California called?
San Andreas fault
What do scientists do to measure ocean depth?
By seeing how long it takes for sound waves to bounce back to the surface, then converting the speed of sound to the depth.
What layer of the earth do convection currents come from?
The core.