Alaska Physical Geography Quiz
Glaciers, tundra, earthquakes (10 questions).
Alaska Physical Geography Quiz: Quick Study Notes
Alaska is defined by its dramatic physical geography, ranging from the seismic volatility of the Pacific Ring of Fire to the frozen expanses of the Arctic tundra. This quiz tests your knowledge of the massive forces shaping the Last Frontier.
Key Takeaways
- The 1964 Good Friday Earthquake (M9.2) was the second largest in recorded history.
- Permafrost is ground that remains frozen for at least two consecutive years.
- The Aleutian Islands are a volcanic arc formed by subduction zones.
- “Calving” is the process where chunks of ice break off glaciers into water.
- Tree growth in the tundra is inhibited by cold temperatures and frozen soil.
Frequently Asked Questions
What causes earthquakes in Alaska?
Most earthquakes in Alaska are caused by the subduction of the Pacific Plate beneath the North American Plate, releasing massive amounts of energy.
What is permafrost?
Permafrost is soil, rock, or sediment that has remained at or below 0°C (32°F) for two or more consecutive years.
How much of Alaska is covered by glaciers?
Glaciers cover approximately 5% of Alaska’s surface area, which amounts to roughly 29,000 square miles.
Why are there no trees in the tundra?
Trees cannot survive in the tundra due to the extremely short growing season, low temperatures, and permafrost preventing deep root systems.
What is the largest earthquake recorded in Alaska?
The Great Alaska Earthquake of 1964 (Good Friday Earthquake) had a magnitude of 9.2, making it the largest recorded in North American history.
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