About Rocks, Minerals and Volcanoes Quiz #842
Rocks, Minerals and Volcanoes Quiz #842 was the quiz for Thursday, October 22, 2026: 10 questions: 3 easy, 4 medium and 3 hard. Everyone who played Rocks, Minerals and Volcanoes Quiz that day got the same quiz, and it stays here to play for 60 days.
The questions of Rocks, Minerals and Volcanoes Quiz #842
- What is the method of swirling gravel and water in a shallow dish to find gold called?
- Which instrument records the shaking of earthquakes?
- What happens to sharp rocks that tumble along a river bed for a long time?
- Which layer of the Earth is made of liquid metal?
- Which dark, fine-grained volcanic rock makes up most of the ocean floor?
- How do scientists know what the deep inside of the Earth is like?
- What is the breaking down of rock in place, before anything carries it away, called?
- Which small, steep volcanoes are built from loose chunks of lava thrown into the air?
- Diamonds are often mined from pipes of which volcanic rock?
- The collapse of which ancient volcano formed Crater Lake in Oregon?
The answer options and the answers appear only when you play the quiz, one question at a time.
New to Rocks, Minerals and Volcanoes Quiz? The rules, tips and common questions are on the Rocks, Minerals and Volcanoes Quiz page.
Other days of Rocks, Minerals and Volcanoes Quiz
- Rocks, Minerals and Volcanoes Quiz #845, Oct 25
- Rocks, Minerals and Volcanoes Quiz #844, Oct 24
- Rocks, Minerals and Volcanoes Quiz #843, Oct 23
- Rocks, Minerals and Volcanoes Quiz #841, Oct 21
- Rocks, Minerals and Volcanoes Quiz #840, Oct 20
- Rocks, Minerals and Volcanoes Quiz #839, Oct 19
- Today’s quiz, #851
Every day of the last 60 is in the puzzle archive.