Continental Drift
Who proposed the Theory of Continental Drift?
Alfred Wegener
Who proposed the theory of plate tectonics?
J. Tuzo Wilson
Heat transfer without contact; heat transfer through space.
Radiation
The outermost layer of Earth is known as the...
Crust
In a convection current, the cooler, denser fluid does what?
Sinks to the bottom
What is the name of the supercontinent in Wegener's theory?
Pangaea
This plate boundary, plates sliding past each other in opposite directions, is known as?
Transform boundary
Which type of heat transfer requires direct contact?
Conduction
The innermost layer of Earth is known as the...
Inner core
Earthquakes are typically found at which type of plate boundary?
Transform boundary
What is the Theory of Continental Drift?
At one time, the continents were one large supercontinent, known as Pangaea, and after time the continents separated into the ones we know today.
A type of plate boundary where two plates collide, usually resulting in a mountain range.
Convergent boundary
Transfer of heat via movement of fluids.
Convection
Convection takes place in which layer of the earth?
Mantle
A rift valley typically forms at which type of plate boundary?
Divergent boundary
Why don't the current continents fit together perfectly to form Pangaea?
Erosion
A plate boundary that involves two plates separating, moving away from each other in different directions.
Divergent boundary
What creates convection currents in the mantle?
Heat from the core and mantle of Earth.
The lithosphere is broken into sections called...
Tectonic plates
What two states of matter are considered fluids?
Gases and liquids
What three pieces of evidence did Wegener suggest to support his theory?
Mountain ranges, fossils, and shape of continents.
The process where the more dense plate sinks beneath a less dense plate, sinking back into the mantle.
Subduction
What three pieces are needed to create a convection current?
Heating and cooling of a fluid, change in density of a fluid, and gravity.
The lithosphere sits above what layer of the earth?
Asthenosphere
The three types of tectonic plate motion are...
Mantle convection, ridge push, and slab pull.