Plate Tectonics Vocabulary

The theory that continents were once part of a single landmass that broke apart (a)  

Forms where plates are moving away from each other is called _______.

Formed where two sections of Earth’s crust are colliding. (a)  

The land mass where all of the continents were once together in one large continent is called ________________.

(a)   a theory that a new sea floor is created at mid-ocean ridges and that in the process the continents are pushed apart from each other.

A satellite image can help scientist locate the area where two continental plates have diverged by showing the existence of (a)  

A device that can detects small changes in magnetic fields is called a(n)

What happens when the flow in the outer core changes, and Earth's magnetic field changes direction? (a)  

The study of the history of Earth's magnetic field is called...

An imaginary line on a map that shows points that have the same age is called a(n) (a)