Pangea-means one land, scientist believe that the continents were once one big land mass
Sea floor spreading- two sea floors are spreading apart makes the ocean bigger.
Plate boundries- the edges of the plates
The ring of fire-where all of the volcanoes are
The mid-ocean ridge-the biggest maountain range in the world, tallest, and it's underground
Shifting north and south pole-north and south pole switch once every 100,000 years don't know why

Extinct volcanoes on the moon tell us that the moon's crust isn't moving
Active volcanoes on mars tell us that the crust is still moving

Dubo-shifts 4.26 mm a year
HILO-35.77mm year
KELY-11.23mm a year
HOFN-14.87 mm a year

Tells us they are slowly moving

Rotation of the earth-caused the earth to wobble slightly on it's axes, also shortened the day by 2.6 micro seconds


Shape of the earth - The momentum of the water displaced by tectonic uplift had also dragged massive slabs of rock, each weighing millions of tons, as far as 10 km (7 mi) across the seabed


Shape of ocean where it originated there was a sudden vertical rise in the sea bed.


Energy released-the same as 26.3 megatons of tnt.

Three pieces of evidence for his idea for plate techtonics
1.The continents fit together like a puzzle
2. Found fossils of animals that couldnot have survived unless the contenents were connected
3. Found fossils of tropical plants in antarctica