A theory that states that all continents on earth were once together as one.
continental drift
A theory that was created by an american scientist named Henry Hess.
Seafloor Spreading
A type of convergent boundary that involves two oceanic plates.
oceanic-oceanic
A line on a map that connects points of the same age.
Isochron
A place where two plates are moving apart.
divergent boundary
The scientist that created the theory of drifting continents.
Wegner
A process by which one tectonic plate slips beanth another.
Subduction
A place where two tectonic plates are horizontally sliding past each other.
Transform Boundary
The first continent on Earth.
Pangaea
A long and narrow depression.
Rift Valley
A place where two plates are colliding.
Convergent Boundary
A tool used to measure Earthquakes.
seismograph
Heat transfer by direct contact.
conduction
Heat transfer through an empty space.
radiation
The layer in the Earth under the crust.
upper mantle
Transfer of heat by the movement of heated fluid.
convection
The measure of how much mass there is in a volume of a substance.
density
There are three types of it.
heat transfer
The top and thinist layer of the Earth.
Crust
Created by the oceanic-oceanic boundary.
Island Arc