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Questions and Answers
What is the theory of continental drift?
What is the theory of continental drift?
- The continents are stationary.
- The continents are moving very slowly. (correct)
- The continents are moving rapidly.
- Continents never existed as a single mass.
What are fossils?
What are fossils?
The remains, traces, or imprint of an ancient living thing preserved in rock.
What is a glacier?
What is a glacier?
A large, slowly moving body of snow and ice.
What is an ice age?
What is an ice age?
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What is a landmass?
What is a landmass?
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What is Pangaea?
What is Pangaea?
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What is a supercontinent?
What is a supercontinent?
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What does geologic time refer to?
What does geologic time refer to?
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Study Notes
Continental Drift
- Theory proposing that continents move slowly over time.
- Alfred Wegener introduced the concept of Pangaea, a supercontinent from which the continents diverged.
- Suggests gradual drifting of land masses to their current locations.
Fossil
- Preserved remains or traces of ancient organisms in rock formations.
- Includes various forms such as bones, shells, impressions, and footprints.
- Fossils provide significant insights into Earth's history and biological evolution.
Glacier
- A massive, slowly moving accumulation of snow and ice.
- Glaciers cover vast areas and play a crucial role in shaping Earth's landscape.
Ice Age
- A period characterized by significantly lower global temperatures, resulting in extensive glacial coverage.
- Ice Ages have occurred multiple times throughout Earth's history, profoundly impacting environments and species.
Landmass
- Defined as a substantial, continuous area of land.
- Geographically important for understanding the arrangement and movement of continents.
Pangaea
- A prehistoric supercontinent believed to have existed between 200 to 300 million years ago.
- Pivotal in the study of continental drift and plate tectonics.
Supercontinent
- Refers to a large landmass comprising two or more continents joined together.
- The concept is essential for understanding Earth's geological history and plate movements.
Geologic Time
- A vast timeframe encompassing thousands, millions, and billions of years in Earth's history.
- Helps scientists classify events and changes in Earth's structure and life over extensive periods.
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