What is the cycle of heating, rising, cooling, and sinking?
convection, convection currents
100
What causes the tectonic plates to move?
Convection currents
100
pieces of earths crust move on top of the _______?
mantel
100
what kind of boundary is formed when two lithosopheric plates slide past each other?
Transform, Transform boundary
200
What is a plate that moves away from each other. (divides)?
diverge, divergent
200
the sea floor spreading theory was proposed by ________?
Harry Hess
200
the Himalayan mountains were formed because of a ______?
Convergent boundary
200
As rock moves away from a mid-ocean ridge, it is replaces by _______?
A. continental crust C. suspect terraines
B. molten Rock D. older rock
B
200
what type of boundary has the plates moving apart?
Divergent, Divergent boundary
300
What is a plate that slides past each other.
Transform
300
one large land mass hypothesized to have broken apart about 200 million years ago into continents?
Pangaea
300
if you used the theory of plate tectonics to predict the most likely place for the next earthquake or volcanic eruption, you should predict that it is most likely to occur ____?
A.along boundary between colliding lithospheric plates
B.in the intiror of any contenent
a
300
what is the 4th layer of the earth?
outer core
300
the ring of fire is a ring of volcanoes and earthquakes that occur along ________?
Plate boundary
400
What happens when a plate converges?
volcano, volcanoes, mountains, mountain
400
hypothesis that the continent have move slowly to their current locations?
Contental Drift
400
subduction is when?
A. earthquakes occur along a transform boundary
B. new crust is formed
C. one plate slides under another
D. new islands are formed
C
400
what two types of crust make up the surface of the earth?
oceanic and continental crust
400
if a continental plate and an oceanic plate decide to slam into each other (subduction), which one would sink into the mantel? (HINT: think about which one is denser)
Oceanic, oceanic plate
500
where rocks on opposite sides of faults move in opposite directions or in the same direction at different rates?
strike slip fault, transform
500
The mid-ocean ridge occurs along a ______?
A. convergent boundary where crust is subducted
B. divergent boundary where seafloor spreading takes place
C. transform boundary there crust is subducted
D. divergent boundary where subduction takes place
B
500
the process that continually adds new crust is _______?
seafloor spreading, sea floor spreading
500
the theory that states that pieces of earths crust are in constant slow motion driven by movement in the mantel is called ______?
Theory of plate tectonics, Plate tectonics
500
show do scientist learn about the interior of the earth?