Plate Tectonics Crossword

What forms long chains of mountains that rise up from the ocean floor.
Plates move apart,or diverge,from each other
Plates come together,or converge
Plates slip past each other is called
In the mid-1960s, geologists combined what they knew about sea-floor spreading,Earth's plates, and plate motions into a single theory is called.
It is broken into pieces separated by cracks.
Breaks in earths crust where rocks have slipped past each other-form along these boundaries
Where pieces of earths crust diverge on land, a deep valley is called.
a large landmass
is the point or line where one region ends and another begins
is the outer layer of earth
According to wegener, the continents were joined together in a supercontinent, or single landmass, about 300 million years ago. Wegener called this supercontinent what.
Any trace of an ancient organism that has been preserved in rock is called.
By the 1960s, geologists had learned more about mid-ocean ridges continually add new mateial to the ocean floor what is this called?
Does the ocean floor keep getting wider without stopping? No, eventually the ocean floor plunges into deep underwater canyons. These canyons are called
The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is called
layer of molten metal surrounding the inner core
is a dense ball of solid metal.
the rock below the boundary is the solid material of
So geologists often group the crust and uppermost mantle into a single layer called.
This soft layer is called