About Rocks, Minerals and Volcanoes Quiz #834
Rocks, Minerals and Volcanoes Quiz #834 was the quiz for Wednesday, October 14, 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 #834
- Which shiny, brassy mineral is nicknamed fool's gold?
- Which US state is made up of volcanic islands in the Pacific Ocean?
- What colour does fresh, very hot lava glow?
- Which glassy black volcanic rock forms when lava cools too quickly for crystals to grow?
- How do scientists know what the deep inside of the Earth is like?
- Which mineral, the natural form of table salt, forms cube-shaped crystals?
- Which American seismologist created a famous earthquake magnitude scale in 1935?
- Which 17th-century scientist is credited with first stating that lower rock layers are older than the layers above them?
- Which volcano in the Philippines erupted hugely in 1991 and cooled the whole planet for a while?
- The Jurassic Period is named after which mountain range?
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 #837, Oct 17
- Rocks, Minerals and Volcanoes Quiz #836, Oct 16
- Rocks, Minerals and Volcanoes Quiz #835, Oct 15
- Rocks, Minerals and Volcanoes Quiz #833, Oct 13
- Rocks, Minerals and Volcanoes Quiz #832, Oct 12
- Today’s quiz, #851
Every day of the last 60 is in the puzzle archive.