Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
16 Cards in this Set
- Front
- Back
Alfredo Wegener |
A German scientist who proposed a hypothesis of continental drift. |
|
Pangaea |
Meaning ALL LAND. Or a single super continent. |
|
Pangaea broke up... |
...about 200 million years ago into smaller pieces and drifted into their present locations. |
|
What similarities were noticed to determine Pangaea was once a super continent? |
Wegener saw similarities on opposite sides of the South Atlantic Ocean. |
|
Other evidence of continental drift included... |
...several fossil organisms found on different land masses. |
|
What examples does Wegener give for Fossil evidence of continental drift? |
A Mesosaurus fossil remains were limited to eastern South America and southern Africa. |
|
During a recent Glacial period scientist believe... |
...the lower sea level allowed animals to cross the Bering Strait between Asia and North America. |
|
250 million years ago |
Pangaea consist of all major continents.( Super Continent) |
|
200 million years ago |
The rift that created the Atlantic Ocean occurred over a period of time. The first rift developed between North America and Africa. |
|
100 million years ago |
Continued drifting of the southern landmasses sent India on a northward journey. |
|
50 million years ago |
Australia began to separate from the Antarctic |
|
Present time about the continents |
Modern map shows India collided with Asia, creating the Himalayas. |
|
Rock evidence of continental drift |
Exist in form of several mountain belts ending on one coast line only to reappear on another landmass/coast line. |
|
Wegener job was a.... |
Meteorologists |
|
Glacial deposits were found between 220 million and 300 million years ago in a large area of the |
Southern Hemisphere |
|
Glacial till were found on... |
...on Southern Africa and South America as well as India and Australia. |