Boundaries
What are the three types of boundaries?
Convergent, Divergent, Transform Boundaries
What is the name of the theory described by Alfred Wegener?
Theory of Continental Drift
What one natural disasters are caused by plate tectonics?
Volcanic Eruptions, Earthquakes, Tsunamis
Where are the most volcanoes and earthquake activity located?
Ring of Fire
Which is the innermost layer and what is it made of?
inner core- iron/nickel
What type of boundary is it when crust destroyed?
Convergent Boundary
What is another name for lithosphere?
crust
What causes fold mountains?
Two continental plates colliding
What is the thinnest layer?
crust
What type of boundary is it when new crust forms?
Divergent Boundary
Name Wegener's supercontinent.
Pangea
What is the main cause of a tsunami?
What happens as you descend to the center of the earth to temperature and pressure?
they increase
What type of boundary is it when two plates slide past each other?
Transform Boundary
What causes plates to move?
convection currents
What caused the mid ocean ridge to form?
seafloor spreading (divergent boundary)
Which type of crust is more dense?
oceanic crust
What are the three types of convergent boundaries?
continental-continental, oceanic-oceanic, and oceanic-continental
What are plate tectonics?
Broken parts of lithosphere (crust) that carry continents and oceans
What causes subduction to occur?
When an oceanic plate and continental plate collide.
On which layer do convection currents occur?
asthenosphere