Intro
What is the theory that describes large-scale movements of our planet's surface?
Plate tectonics
What do crusts do at a convergent boundary?
Collide
What do two crusts do at a divergent boundary?
Divide // move away
What do crusts do at transform boundaries?
Slide
True or False: There are three types of crust on our planet.
False. Only two!
What are the three MAIN types of boundaries?
Transform, Convergent, Divergent
Name the process in which a more dense plate slides under a less dense plate at a convergent boundary
Subduction
What is formed on land at a divergent boundary?
A rift valley
DAILY DOUBLE!!!
What is your new science teacher's name?
Mrs. Dodd
False! Transform boundaries slide. Convergent boundaries collide.
What are the two main types of crust?
Oceanic and Continental
What are the three types of convergent boundaries?
Oceanic-Oceanic
Oceanic-Continental
Continental-Continental
At a divergent boundary, what is happening with earth's crust?
New crust is being created from magma/lava.
What type of disaster is caused at a transform boundary?
Shallow earthquake
True or False: Divergent boundaries can occur between two continental crusts OR two oceanic crusts.
True!
Which is more dense: Oceanic or Continental crust?
Oceanic crust
Which type of convergent boundary creates mountains?
Continent-Continent
Do ocean-ocean divergent boundaries involve subduction?
No! There is no subduction because they are dividing, not colliding.
There are many places that shallow earthquakes could happen due to a transform boundary. What is the name of one in the United States?
The San Andreas Fault
True or False: Younger, less dense plates will subduct under older, more dense plates.
False! The more dense, older plate subducts.
Name the three layers of the earth, in order from the surface downward, that are involved in plate tectonics.
Crust (continental and/or oceanic)
Lithosphere
Athenosphere
Where along the Pacific plate are there lots of volcanoes and earthquakes?
The Ring of Fire
What land form is created at an ocean-ocean DIVERGENT boundary?
Mid-Ocean Ridge
(or Atlantic Ridge)
What two crusts are involved at a transform boundary?
Oceanic and continental.
True or false: Continent-Continent collisions form mountains.
True!