Plate Tectonics Crossword

What are the Earth's large landmasses called ?
What is the point or line in which one region ends and another begins ?
What is the outer layer of the Earth ?
What is the hypothetical super continent that included all of the current landmasses ?
What's a long, active ridge system located in the middle of an ocean basin ?
What is the formation of new areas of oceanic crust ?
Who was the scientist that had a theory about continental drift ?
What type of boundary involves plates moving away from each other ?
What type of boundary involves plates colliding ?
What type of boundary involves plates slipping past each other ?
How many years have the continents taken to move to their present location ?
what is an unknown boundary called ?
What are Earth's pieces separated by cracks ?
what's formed when pieces of Earth's crust diverges on land
What was evidence for sea floor spreading that involved pillow lava on the ocean floor ?
What is the evidence for sea floor spreading that involved magnetic striping on a ridge ?
What is the evidence for sea floor spreading that involved ocean floor samples ?
What is the inner layer of the Earth called ?
What is the layer above the inner core ?
What is the Earth's second outermost layer ?