Understanding Plate Tectonics

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1.
– What supercontinent existed millions of years ago?
2.
– Who first proposed the theory of continental drift?
3.
– What term describes the large pieces of Earth’s crust that move?
4.
– What is the semi-molten layer beneath tectonic plates called?
5.
– What process forms new crust at mid-ocean ridges?
6.
– What is the name of the zones where one plate slides under another?
7.
– What type of scientific evidence includes matching fossils on different continents?
8.
– What forms when plates pull apart on land?
9.
– What percentage of earthquakes occur along plate boundaries?
10.
– What process inside Earth moves tectonic plates by heat currents?
11.
– What kind of rock records Earth’s magnetic field reversals?
12.
– What is the global area known for volcanoes and earthquakes called?