Explore geology trivia with 139 supporting Trivia Castle questions, related topics, and a direct link into the game.
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Answer: Trees
Bonus fact: Amber begins as sticky plant resin that hardens and can survive for millions of years.
Answer: A very large rock
Bonus fact: In geology, a boulder is a rock fragment larger than a cobble.
Answer: 256 millimeters
Bonus fact: The Wentworth grain-size scale defines boulders as clasts larger than 256 mm.
Answer: Glacial erratic
Bonus fact: Glacial erratics can be carried great distances by moving ice before being deposited.
Answer: Erosion
Bonus fact: Running water is a major force in carving many canyons.
Answer: Stalactite
Bonus fact: Stalactites form on cave ceilings, while stalagmites grow upward from cave floors.