The sphere in the center of the Earth made up of solid of hot metals.
What is the inner core
100
The scientist who first proposed the theory of continental drift.
Who is Alfred Wegener
100
Scientific name for the edges of tectonic plates.
What are plate boundaries
100
Where two plates carrying continental crust push (slowly crash) together often forming mountain ranges.
What is continental-continental collision
100
The longest chains if mountains on Earth where divergent boundaries move apart allowing magma to escape forming ridges of mountains.
What are mid-ocean ridges.
200
A layer of liquid metals that surrounds the inner core.
What is Outer Core.
200
The supercontinent that Wegener proposed existed originally and then drifted apart.
What is Pangea
200
Where two plate move apart.
What is a divergent boundary.
200
When a convergent tectonic plate sinks and moves under another.
What is subduction
200
The year Alfred Wegener proposed the hypothesis of Continental Drift in his book "The Origins of Continents and Oceans".
What is 1915
300
The thickest layer inside the Earth made up of hot, liquid rock.
What is the Mantle
300
The large and small slabs of crust that surround the Earth and fit together like a jigsaw puzzle.
What are tectonic plates
300
Where two plates push together.
What is a convergent boundary
300
The gap that is formed where two divergent boundaries are splitting apart.
What is a rift valley
300
The chain of islands created by movement of the Pacific Plate over a hot spot.
What is the Hawaiian Islands
400
Earth's crust and the very top of the mantle.
What is the lithosphere
400
The theory which states that Earth's lithosphere is made up of huge plates that move over the surface of the Earth.
What is the theory of plate tectonics.
400
Where two plates move and scrape pass each other.
What is a transform boundary
400
Stationary places where plumes of hot rock rise to the suface of Earth and release magma creating new landforms such as islands and volcanoes.
What are hot spots
400
The ocean ridge that bisects Iceland.
What is the Mid-Atlantic Ridge
500
A layer of hot, soft rock that the lithosphere sits on top of like pavement resting on hot tar.
What is the asthenosphere
500
The continuous cycle (conveyor belt) of sinking and rising material which is heated (rises) and then
cools (sinks).
What are convection currents
500
The switch in direction of the magnetic poles. The magnetic north pole becomes the magnetic south pole and the magnetic south pole becomes the magnetic north pole.
What is magnetic reversal
500
A valley in Eastern Africa where the African plate is splitting apart (divergent boundary).
What is The Great Rift Valley
500
The technology that helped us discover that the ocean floor has mountain ridges and trenches.