Plate Tectonics

Compared to ocean crust near deep-sea trenches, crust near ocean ridges is

Earth’s continents were once joined as a single landmass called

The earth has an electromagnetic field that protects us. It is created from the rotating magma in the earth's....

Continental-continental plate collisions produce 

Features found at divergent boundaries include

Continental - continental convergent plate collisions create

A continental plate is more dense than an oceanic plate.

Magnetic Reversal is the concept that the North Pole becomes the South Pole and vice versa.

At an oceanic-oceanic convergent boundary

Two places we talked about has a divergent boundary visible above the ocean....Iceland and

A transfer of thermal energy by the movement of warmed matter is called convection.

The youngest part of the ocean floor is found

Convection currents transfer thermal energy

A vast, underwater mountain chain is called a(n)

When subducting plate helps to pull the lithosphere into subduction zone its called ridge push.

Paleomagnetism from a rock gives information on

Continental Drift was not widely accepted when it was first proposed because

The magnetic pattern of ocean-floor rocks on one side of an ocean ridge is

Early map makers noticed the coastline of South America matched the coastline of Asia.

Compared to oceanic crust, continental crust is thicker and lighter, therefore remains on top when converging.

How long is the mid-ocean ridge?

Crust is neither created or destroyed near which of the following boundaries?

A narrow, elongated depression in the seafloor is called a(n) 

If continental plates converge, a subduction zone is created.

Each cycle of spreading and intrusion of magma during seafloor spreading results in ____.

Scientist first rejected Wegner's ideas because he couldn't prove how the continents moved.

Two things that all oceanic plate convergent boundaries have in common are