1. How does this animation explain
The Theory of Continental Drift?

2. ReviewReview
Continental drift
1. Continent shape
2. Fossil evidence
3. Rock evidence
4. Mountain evidence
5. Glacial scars

3. Plate TectonicsPlate Tectonics
Two parts of the theory:
Part One:
Lithosphere - the solid
layer of the Earth,
Is broken up into crustal
plates

4. Plate TectonicsPlate Tectonics
Crustal plates - large pieces
of crust
7 main plates and several
smaller ones
Continents and ocean floors
rest on the plates

6. Plate TectonicsPlate Tectonics
Part Two:
Crustal plates “float” on the
upper part of the mantle
Like rafts on a lake

7. Source of MovementSource of Movement
Convection current –
the movement of a fluid
caused by temperature
difference

9. Source of MovementSource of Movement
Gravity

10. Plate TectonicsPlate Tectonics
Explains how the continents
move
Also explains natural events like:
Earthquakes
Mountain formation
Volcanoes