Drifting Continents
1912
What does SONAR stand for?
Sound Navigation and Ranging
Divergent boundary
The type of boundary found at ridge push.
What type of waves does sonar use to measure/map the ocean floor?
The name of the hypothesis Alfred Wegener proposed that Earth's continents had once been joined
The deepest Trench in the ocean.
Mariana Trench
The boundary that slides past each other.
Transform Boundary
Longest underwater mountain ranged located in the Atlantic Ocean
The Mid-Ocean Ridge
All the Earth
The type of geologic evidence that Wegener found to have similar rock types in Greenland, United States, and Europe
Vast, underwater mountain chains
The two types of crust.
Oceanic and Continental crust.
Greenland
The geologic process where the denser plate goes underneath the lighter plate.
In Climatic Evidence, this is the name of the fossilized seed fern.
Glossopteris
The theory that explains how new oceanic crust is formed at ocean ridges, and destroyed at deep sea trenches.
Seafloor Spreading
A narrow, elongated depression in the seafloor
Deep-sea trench
The study of mapmaking
Cartography
The two types of sonar.
Active and Passive sonar.
One, he couldn't explain what force could be strong enough to push large masses over distances.
Two, he couldn't explain how the continents were moving.
The device that can detect small changes in the magnetic fields.
Magnetometer
Name the 7 major plates of the world
African, Eurasian, Antarctic, Australian, North America, South America, Pacific
The name of the American Samoa's active volcanic seamount
Vailulu'u
Convection Currents.