1. The document discusses Alfred Wegener's theory of continental drift and the existence of the supercontinent Pangaea approximately 225 million years ago that broke up into the continents as we know them today. 2. It describes the movement of tectonic plates under the earth's surface which slowly causes the drifting of continents at a rate of 1-10 cm per year and can result in earthquakes when plates collide or move laterally against each other. 3. The different types of plate interactions are explained, including subduction that occurs when an oceanic plate collides with a continental plate.

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2. Pangaea: The Super-Continent Created by Mr. Raponi

4. The Father of the Continental Drift Theory In 1915, the German geologist and meteorologist ________________ first proposed the theory of ________________ Drift This idea states that parts of the Earth's crust slowly drift atop a _______________ core. Alfred Wegener Continental Liquid BIG AL

5. Big Al’s Big Discovery

6. Pangaea Wegener thought that there was a gigantic super continent _______ million years ago Pangaea was an area consisting of all of Earth's land masses. It existed from the ______________ through ____________ Periods. It began breaking up during the late Triassic period. 225 Permian Jurassic

7. Pangaea: 200 million years ago 1. ______________ 2. South America 3. ______________ 4. ______________ 5. Asia 6. ______________ 7. Antarctica 8. _______________ 1 2 3 4 5 6 7 8 North America Europe Africa Australia India

8. Continental Drift The rock plates that the continents sit on moved, the super-continent broke up and began to move apart. This continental ___________ is far from over. The Earth's surface is constantly moving and reforming, but so slowly that you or I can't observe it ourselves. Drift

9. What Did It Look Like?

10. Speed of Movement Below the land, there is a layer of rock called the Deep ____________, which is hot enough to be fairly soft. The plates seem to float on this soft rock, altering the shape of the Earth’s surface The plates are moving at a speed that has been estimated at _________ cm per year Moving Area Mantle 1-10

11. Inside of The Earth

12. TYPES OF PLATE MOVEMENT When two plates collide, some crust is destroyed in the impact and the plates become smaller. The results differ, depending upon what types of plates are involved.

13. Oceanic Plate and Continental Plate When a thin, dense oceanic plate collides with a relatively light, thick continental plate, the oceanic plate is forced under the continental plate; this phenomenon is called ___________________. It essentially boils down to the fact that the continental plate is much larger and stronger than the little oceanic plate, and the smaller of the two is eaten up by the larger one. Subduction

14. What is Subduction?

15. Two Continental Plates When two _______________ plates collide, _______________ are created as the colliding crust is compressed and pushed upwards. Continental Mountains

16. Two Continental Plates Collide The Land Above The Plates Rises, Creating Mountains

18. Lateral Slipping Plate Movement When two plates move sideways against each other, there is a tremendous amount of _____________ which makes the movement jerky. The plates slip, then stick as the friction and pressure build up to incredible levels. When the pressure is released suddenly, and the plates suddenly come apart, this is an _________________. Friction Earthquake

19. Earthquakes

21. 3-2-1 : 3 important terms to remember. 2 ideas or facts you would like to know more about. 1 idea, process, or skill you think you have mastered. Ticket To Leave