Tectonic plates crossword puzzle

1. a thin layer of cool rock that contains continental and oceanic crust
2. a young german scientist who proposed a hypothesis called continental drift
3. made of magma, very hot, semi-solid rock
4. includes crust and the topmost layer of the mantle
a swirling layer of molten nickel and iron
A long mountain range on the ocean floor
discovered sea floor spreading
a dense ball of solid nickel and iron
the upper part of the mantle that is semi-solid and flows slowly
when all continents were once joined together in a supercontinent roughly 225 million years ago
located at the center of a mid-ocean ridge from which magma flows and forms new oceanic crust
a ship that was specifically created for scientific drilling of the sea floor
earth's lithosphere is broken into separate sections of rock called_____________
different kinds of stress can result in ___________ _________________________
a type of stress that lengthens materials or pulls them apart
a type of stress that squeezes or shortens materials
causes materials to slide of become distorted
where the edges of two tectonic plates meet
A tectonic boundary where two plates are moving away from each other
A tectonic boundary where two plates are moving toward each other
a tectonic boundary where plates slide sideways past each other