1	Any trace of acient organism presserved in rock.		_____	Subduction
2	Proposed a hypothesis that all continents were together.		_____	Convergent
3	As climate gets colder continents move toward ___.		_____	Pangea
4	As climate gets warmer continents move toward ___.		_____	Divergent
5	Super continent.		_____	Crust
6	Sea floor spreading adds ____ to the ocean floor.		_____	Mid-Ocean
7	A small submarine used to explore the ocea floor.		_____	fossil
8	Adevice that uses sound waves to measure distance.		_____	Sonar
9	Ridges that form long chain of mountains the rise up from ocean.		_____	Equator
10	Process whereby ocean floor sinks beneath the ocean trench.		_____	Alvin
11	Plates come together at_____ boundary.		_____	Wegner
12	Plates move apart from each other at____ boundary.		_____	Poles