Plate Tectonics Review

If the heat source is removed from a fluid convection currents will__________-

The theory that new oceanic crust forms at a mid ocean ridge as old oceanic crust moves away

The hypothesis that continents are in constant motion

Most earthquakes and volcanoes occur in the Ring of Fire..WHY?

Happens when two plate separate

According to Wegener's hypothesis of continental drift...

The rigid plates composed of the crust and part of the upper mantle are called the ...

The lithosphere is broken into sections called___-which float on top of the asthenopshere

Happens when two plates slide past one another

How did scientists discover that rocks farther away from the mid-ocean ridge were older

An ocean plate plunges beneath a trench and back into the mantle in a process called_____

The order of the layers from surface to center

In the asthensophere, magma rises because heat from the core decreases

The cycle of heating, rising (less dense), cooling (more dense), and sinking in the Mantle is a

Earth's surface is made of lithospheric plates that move- convection currents in the mantle

A rift valley forms where two plates

The ____ is (are) anexample of a transform boundary

Happens when two plate collide

The ancient super continent composed of land that forms todays continents

The mountain ranges formed by divergent plates spreading

Which of the following was not evidence for continental drift

What are formed when two continental plates collide.

Why did most geologist reject Wegener's idea of continental drift?

Who developed the idea that the continents slowly move over Earth's surface?