1. ROCKS
Rocks
What do you know about rocks?

2. What is a Rock?
Any solid mass of mineral or mineral- like matter that occurs naturally as part of our planet
3 types
Igneous
Sedimentary
Metamorphic
Does anyone know what a rock is?
How do we determine the classification of rocks?

3. The Grand Canyon

4. The Rock Cycle
Interactions among Earth’s water, air, land, and living things can cause rocks to change from one type to another
A continuous process
ROCK CYCLE VIDEO

5. Plate Tectonics
Explain plate tectonics.
What do you know about it?

6. What is Continental Drift
Proposed by Alfred Wegener
Stated that the continents had once been joined to form a single supercontinent
Wegener’s Theory
Pangaea broke apart 200 MY
Continents “drifted”
Continents “broke” through the oceans
What was the super continent? How do we know that the continents were once all joined together?
Explain what he meant by “drift”

7. Evidence of Continental Drift
Shorelines look like they fit together
Fossil organisms found on different landmasses
Several mountain belts end at one coastline, only to reappear on a landmass across the ocean
Ancient Climates
How would fossil evidence found on two different continents indicate that there once was a super continent?

8. Matching Mountain Ranges

9. Glacier Evidence

10. The Theory of Plate Tectonics
Proposes that Earth’s outer shell consist of individual plates that interact in various ways and thereby produce earthquakes, volcanoes, mountains, and the crust itself
In your own words, explain plate tectonics…how do the plates moves?

11. Pangaea Occurred 500 MY Continents breakup begins 200 MY
North America and Africa split 135 MY

12. Earth’s Major Plates The lithosphere floats and moves along the mantle
Top 7 Plates Remaining Plates
*African Arabian
*Antarctic Caribbean
*Eurasian Cocos
*Australian-Indian Nazca
*North American Philippine
*Pacific Scotia
*South American

13. In your own words, explain plate tectonics.
Exit Ticket
In your own words, explain plate tectonics.