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How many continents are there? Try naming them all!
7 - North America, South America, Europe, Asia, Antarctica, Australia, and Africa
The giant continent that existed 250 million years ago was called...
Pangea
The theory that the continents started moving away from each other very slowly over millions of years is called...
continental drift
What scientist proposed the theory of continental drift?
Alfred Wegner
The Earth has a rocky shell that is broken up into large pieces. These huge pieces of rock are called...
plate tectonics/tectonic plates
How many major tectonic plates lie on Earth's shell?
12
How deep are the plates? This is a tricky question!
60 miles deep
What allows plate tectonics to move?
molten rock
About how many inches do plates move every year? Hint: No more than two inches
About half an inch
True or False: The continents will stop moving after another 250 million years.
False
What does it mean to drift?
drift - to be carried by water or air
True or False: Scientists didn't believe Alfred Wegner's theory until the 1960s.
True
