Plate Tectonics

device that can detect small changes in magnetic fields _____________

_ occurs when the weight of an elevated ridge pushes an oceanic plate toward a subduction zone.

process that occurs @ convergent boundaries where the denser plate slides under the less dense

Which layer are the convection currents located? 

What does the lithosphere consist of??

warmed matter expands and _______ in a convection current.

Convergent boundaries are classified according to the ______________________

__________ are stationary and the ___________ moves.

convection currents cause upward & sideways forces, which lift & split the lithosphere at______

______ move the lithosphere & transfer thermal energy from Earth’s interior to its exterior.

The theory of ________________________ explains how new ocean crust is created.

Early map makers thought continents might have moved based in their observations of ________

downward part of a convection current occurs where a sinking force pulls plates downward at ___

___________  occurs when one tectonic plate descends beneath another. 

Unusually hot are in Earth's mantle where high temperature plumes of mantle material rise toward the surface

The Mid-Atlantic Ridge is an example of ____________________

What is happening in the picture

____________ states that the Earth's crust&upper mantle are broken into slabs that moved slowly

Hawaii is thought have been created due to a _____________.

Where are most divergent boundaries found??

_______________________ are places where plates slide horizontally past each other.

A long, narrow, fault- bounded, continental depression is a(n) _______________________________.

The magnetic patterns on either side of a _____________ are mirror images of each other. 

A change in Earth's magnetic field is called ______________________.

What are thought to be the driving mechanism of plate movements?

the transfer of thermal energy by the movement of heated matter is called ________________.

Hot Spots move.

more dense matter falls due to gravity, warmed less dense matter rises & this up & down flow is

tectonic plates are broken pieces of the ________________

cooling matter _______ and descends due to gravity in a convection current.

Places where plates move apart ___________________.

Plates come together at _____________________________________.

_______ - process when the denser plate eventually descends below the other, less-dense plate.

_____________ is an imaginary line on a map that shows points that have the same age

Ancient super continent is called _________________________.

Which is NOT 1 of Wegener's evidences used to support his theory of continetnal drift

Which of the following is NOT associated with transform boundaries?

tectonic plates interact at places called plate ___________________.