Continental drift is the theory that approximately 200 million years ago, there was a single supercontinent called Pangea that has since broken apart. The movement of tectonic plates, which are massive pieces of crust, caused Pangea to break into separate continents. When tectonic plates collide, one plate can rise to form a mountain range while the other sinks beneath the other to form an oceanic trench.

1. PLATES AND CONTINENTAL RIDGES

2. Continental Drift
It is the theory that 200 million years ago
there was a single continent called Pangea on
the Earth
The Earth, s rotation caused this landmass to
move and break up. The huge pieces of rock
produced are tectonic plates. They are like
massive pieces of a jigsaw puzzle.

4. These tectonic plates move extremely
slowly
• When two plates collide, • The places where plates
one can rise and form a meet are very unstable
mountain range. The other areas that can produce
can sink under the ocean volcanoes and earthquakes.
and form an oceanic trench

5. QUIZ
1. What is the theory of continental drift?
1. What happens when tectonics plates collide?

6. SOLUTIONS
1.Continental drift is the theory that 200 years
ago there was a single continent on Earth:
Pangea
2.In the case of two plates colliding, one may
rise up and form a mountain range, while the
other may sink to form an oceanic trench.