Tectonics
What are faults?
breaks in the earth's crust(earthquakes)
How do plate interactions help to determine risk to humans and the environment?
They help us determine when there is going to be a volcano.
How many types of crusts are there
2
What are the two types of crusts
Oceanic and continental
What are continental plates
Plates under the continent
What are oceanic plates?
Plates under the oceans floor.
How many boundaries are there
3
What happens when an ocean plate collides with another ocean plate
It forms a trench
What happens when a ocean plate collides with a continental plate
It forms a volcano
What happens when a continental plate collides with another continental plate
It forms a fault
What do divergent boundaries form?
Mid-ocean ridges and rift valleys
Which one is more dense, lithosphere or asthenosphere
Asthenosphere
How does what we see today unveil the Earth's past?
Because we can see the volcanos and mountains that where in the past.
What is the lithosphere?
the rigid outer part of the earth, consisting of the crust and upper mantle.
What is the asthenosphere?
the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
What are divergent boundaries?
when plates move away from each other
What are convergent boundaries?
when two plates that are colliding
What are transform boundaries?
When two plates slide past each other
What are convection currents
The process of liquid magma cooling and heating
What are trenches?
underwater "canyons", located in the deepest part of the ocean