Alfred Wegener
what did Alfred Wegener call the land of Earth before continental drift?
Pangea
What is the hottest layer on Earth?
The Inner Core
what is an earthquake?
a shaking of Earth's crust.
what type of wave has a stronger frequency?
Body Waves
where do most earthquakes occur at?
plate boundaries.
What did Alfred Wegener propose to the American Geologists
the Theory of Continental Drift
What is the First Layer of Earth?
The Crust
what are Earthquakes caused by?
a release of energy.
what is the fastest Body-Wave?
P-Waves
they move away from each other.
What did the American Geologists do to Alfred Wegener?
they publically rejected his claim.
What is the farthest layer humans have dug to?
the Crust
what does an earthquake cause when it goes off in the ocean?
a Tsunami
what is the fastest Surface Wave?
Love-Waves
what do convergent boundaries do?
they move towards each other.
Where was Alfred Wegener born?
Berlin, Germany.
What are the main elements in the Outer Core?
iron, nickel, silicon, and oxygen.
what is the point an earthquake starts underground?
a Focus
what travels through the Earth's inner layers?
Body Waves
what do transform plate boundaries do?
they move past each other.
Where did Alfred Wegener die?
Greenland.
How thick is the Mantle?
1,800 miles or 2,900 km
what is the point on the surface directly above a focus?
an Epicenter
most shaking from an earthquake is due to what?
Rayleigh Waves
how are mountains formed?
when two continents collide at convergent plate boundaries.