Land bridge Theory Test
1. What is the Land bridge?
2. Glacier3. Theory4. What does the Land Bridge theory try to explain?
5. The land bridge was a ___________________ that was used to explain how
migration occurred.
6. Ice Age7. What group of people migrated to the Americas using the land-bridge? ______________
8. Between which two continents (where) ___________ to (where) _____________ did
the migration occur?
9. What period of time did the migration occur? _____________
10. What did the hunter-gatherers follow? ______________
11. Why did the people cross the land bridge?
12. How did the Land Bridge form?
13. What happened to the Land Bridge?
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Bonus: Where did the Land Bridge take place (what was the area called)?
When the climate grew warmer, the glaciers melted and the ocean levels rose
again and covered the land bridge.
12,000 BC
a long period of extreme cold on Earth
How humans first got to America
Asia
Wooly mammoth
thick sheets of ice
It formed because the glaciers were sucking up all of the water, thus dropping the
sea level exposing a piece of land that could be traveled upon.
North America
possible explanation
Asian hunter gatherers