1. Evidence of Continental Drift and Sea Floor Spreading

2. 11/14/2013 Warm Up What is a one word synonym for Pangaea?
What is continental drift? How fast does it happen?
In which layer of the Earth do you find tectonic plates?
Describe what the crust of the Earth looks like.
Supercontinent
When continents move apart. Plates move very very very slowly, only inches per year
Crust/lithosphere
Pangaea

3. If you have been absent you need to go to my website to get caught up annamarello.weebly.com
Go through the powerpoints you have missed
Quiz tomorrow rock cycle rock types vocab on pg 36 layers of the Earth

4. Attach rock cycle to the back of 31 Attach Pangaea handout to front of 37

5. Evidence of Continental Drift (back of 37)
Page A-14-A15 YELLOW
Evidence of Continental Drift (back of 37)
Evidence Description
Wegener found the same fossil from the same animal in two separate continents. This indicated that the continents were once connected.
Fossils
There were tropical plant fossils found in Antarctica, and fossils of ice sheets found in Africa, indicating major climate changes
Climate
Geology
The same rock formations were found in North America and Europe, and South America and Africa suggesting the mountains split apart.

6. Evidence from the sea floor (front of 35)
Description

7. Evidence
Description
Sea Floor Spreading
Molten rock rises through the cracks and make new ocean crust
Age of Sea Floor
Younger rock is closer to the mid-ocean ridge; Older rock is farther away.
Sea Floor Moves=Continents Move
Ocean Trenches
Why isn’t the Earth getting any larger?
Old crust is being destroyed at the same speed new crust is made.