Continental Drift and Plate Boundaries Flashcards
(9 cards)
What hypothesis did Alfred Wegener come up with?
Continental Drift
Why did scientists reject Alfred Wegener’s hypothesis of continental drift?
He couldn’t identify the force that moved the continents
What evidence did Alfred Wegener have for continental drift?
fossils, landforms, and climate
What is the name of the supercontinent that existed millions of years ago?
Pangaea
What theory states the continents were once all connected and slowly moved over time?
Continental Drift
Theory that states that pieces of the Earth’s Lithosphere is in constant slow motion.
Plate Tectonics
Molten material rises from the mantle at the mid-ocean ridges
Sea floor spreading
In sea floor spreading, molten material rises from the mantle at the…
mid-ocean ridges