About Rocks, Minerals and Volcanoes Quiz #843
Rocks, Minerals and Volcanoes Quiz #843 was the quiz for Friday, October 23, 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 #843
- Which US state is made up of volcanic islands in the Pacific Ocean?
- Which precious gemstone is famous for its deep red colour?
- Japan's highest mountain, Mount Fuji, is what kind of mountain?
- Which sedimentary rock made of hardened mud or clay splits into thin layers?
- What is a sedimentary rock made of rounded pebbles cemented together called?
- On the Mohs scale, what can a mineral with a higher number do to one with a lower number?
- Which American seismologist created a famous earthquake magnitude scale in 1935?
- Who discovered the Burgess Shale fossils in 1909?
- What type of plate boundary is it where two plates move apart?
- Which Mexican volcano famously began in a farmer's cornfield in 1943?
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 #846, Oct 26
- Rocks, Minerals and Volcanoes Quiz #845, Oct 25
- Rocks, Minerals and Volcanoes Quiz #844, Oct 24
- Rocks, Minerals and Volcanoes Quiz #842, Oct 22
- Rocks, Minerals and Volcanoes Quiz #841, Oct 21
- Rocks, Minerals and Volcanoes Quiz #840, Oct 20
- Today’s quiz, #851
Every day of the last 60 is in the puzzle archive.