Continental Drift Monday, January 23, 2012. What planet is this?
-
Upload
beatrice-wells -
Category
Documents
-
view
215 -
download
0
Transcript of Continental Drift Monday, January 23, 2012. What planet is this?
![Page 1: Continental Drift Monday, January 23, 2012. What planet is this?](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de65503460f94ade5a4/html5/thumbnails/1.jpg)
Continental DriftMonday, January 23, 2012
![Page 2: Continental Drift Monday, January 23, 2012. What planet is this?](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de65503460f94ade5a4/html5/thumbnails/2.jpg)
What planet is this?
![Page 3: Continental Drift Monday, January 23, 2012. What planet is this?](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de65503460f94ade5a4/html5/thumbnails/3.jpg)
What planet is this?
![Page 4: Continental Drift Monday, January 23, 2012. What planet is this?](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de65503460f94ade5a4/html5/thumbnails/4.jpg)
How do we know that the planet looked this way?
![Page 5: Continental Drift Monday, January 23, 2012. What planet is this?](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de65503460f94ade5a4/html5/thumbnails/5.jpg)
What is Continental Drift?
• The hypothesis that the continents were once together in a single landmass and later broke up and drifted to their present locations
• Proposed by Alfred Wegener in 1912
![Page 6: Continental Drift Monday, January 23, 2012. What planet is this?](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de65503460f94ade5a4/html5/thumbnails/6.jpg)
Evidence to Support the Theory
![Page 7: Continental Drift Monday, January 23, 2012. What planet is this?](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de65503460f94ade5a4/html5/thumbnails/7.jpg)
What evidence supported Continental Drift?
1. Jigsaw Puzzle Fit:
Continents look like they could fit together like puzzle pieces
![Page 8: Continental Drift Monday, January 23, 2012. What planet is this?](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de65503460f94ade5a4/html5/thumbnails/8.jpg)
What evidence supported Continental Drift?
2. Fossils:
Matching plant and animal fossils were found on the coastlines of different continents
![Page 9: Continental Drift Monday, January 23, 2012. What planet is this?](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de65503460f94ade5a4/html5/thumbnails/9.jpg)
What evidence supported Continental Drift?
3. Rock Formations:
-Ages and types of rocks matched across oceans
-Mountain chains seemed to continue from one continent to another
![Page 10: Continental Drift Monday, January 23, 2012. What planet is this?](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de65503460f94ade5a4/html5/thumbnails/10.jpg)
What evidence supported Continental Drift?
4. Ancient Climates: -Tropical plant remains
(coal deposits) found in Antarctica (cold places)
-Evidence of glaciers in Africa, South America, India, and Australia (warm places)
![Page 11: Continental Drift Monday, January 23, 2012. What planet is this?](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de65503460f94ade5a4/html5/thumbnails/11.jpg)
Continental Drift Ms. GromJanuary 24, 2012
Earth Science
What is Continental Drift (CD)?
What evidence supports CD?
=The hypothesis that the continents were once together in a single landmass and later broke up and drifted to their present locations•Proposed by Alfred Wegener in 1912
1. Jigsaw Puzzle Fit: Continents look like they could fit together like puzzle pieces
2. Fossils: Matching plant and animal fossils were found on the coastlines of different continents
3. Rock Formations: 1) Ages and types of rocks matched across oceans 2) Mountain chains seemed to continue from one continent to another
4. Ancient Climates: evidence of former tropical plant in cold places; evidence of glaciers in warm places
![Page 12: Continental Drift Monday, January 23, 2012. What planet is this?](https://reader035.fdocuments.net/reader035/viewer/2022070406/56649de65503460f94ade5a4/html5/thumbnails/12.jpg)
Problems With The Theory
• No mechanism for movement of continents
• Wind and currents could possibly move fossils
• Theory was not accepted by scientists