About Rocks, Minerals and Volcanoes Quiz #833
Rocks, Minerals and Volcanoes Quiz #833 was the quiz for Tuesday, October 13, 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 #833
- Which gem is made by a living animal rather than formed in rock?
- Which dark grey rock that splits into thin, flat sheets was used for roof tiles and old school chalkboards?
- What are the icicle-shaped formations hanging from cave ceilings called?
- Which of these has the smallest grains?
- Why are glacier-fed lakes in the Rockies, like Moraine Lake, such a bright turquoise?
- Which German scientist proposed the idea of continental drift in 1912?
- Which tectonic plate carries most of Canada?
- Niagara Falls keeps a sharp edge because a hard cap of which rocks sits over softer shale?
- The great Valdivia earthquake of 1960, which most studies place at magnitude 9.4 to 9.6, struck which country?
- Emerald is a green variety of which mineral?
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 #836, Oct 16
- Rocks, Minerals and Volcanoes Quiz #835, Oct 15
- Rocks, Minerals and Volcanoes Quiz #834, Oct 14
- Rocks, Minerals and Volcanoes Quiz #832, Oct 12
- Today’s quiz, #851
Every day of the last 60 is in the puzzle archive.