Continental Drift
This scientist proposed the theory of continental drift in 1912.
Alfred Wegener
This type of boundary occurs when plates move away from each other.
divergent boundary
What is liquid rock called when it reaches the surface?
lava
What causes earthquakes?
Release of energy
The rigid outer layer made of the crust and upper mantle is called this
lithosphere
This was the name of the supercontinent that existed millions of years ago.
Pangaea
At this boundary, plates slide past each other and often cause earthquakes
transform boundary
diverging plates, converging plates, or hot spots
P-wave
This hot, plasticy layer beneath the lithosphere drives plate movement.
asthenosphere
Wegener’s theory was not widely accepted because he could not explain ...
How the continents moved
Name one feature that is formed from continental-continental converging plates.
Mountains
The Hawaii island chains were formed from which process?
Hot spots
How many locations do you need to determine the epicenter of an earthquake?
3
This type of crust is thinner but more dense
oceanic crust
What process was discovered that proved the Continental Drift Theory?
Seafloor spreading
Name one feature that is formed from oceanic-oceanic diverging plates.
Mid-ocean ridge
When an oceanic plate subducts, it drags this substance down with it, helping create magma
water
What date are we getting our puppy?
May 9th
These currents in the mantle cause plate movement
convection currents
What was the name of the scientists who mapped the seafloor that proved seafloor spreading?
Marie Tharp
In oceanic-oceanic convergence, which plate subducts?
The more old, cold, dense plate
Which material causes differences in lava flow type?
Silica
The location inside the Earth's crust where an earthquake is called?
Focus
What state of matter is the outer core?
Liquid