About Rocks, Minerals and Volcanoes Quiz #848
Rocks, Minerals and Volcanoes Quiz #848 was the quiz for Wednesday, October 28, 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 #848
- What is it called when a volcano throws out lava, ash and gas?
- Over millions of years, what carved Arizona's Grand Canyon?
- What are most rocks made of?
- Most large caves form in which rock, which slowly dissolves in slightly acidic rainwater?
- Which island volcano in Indonesia erupted in 1883 with blasts heard thousands of kilometres away?
- About how hot can freshly erupted lava be?
- What is the huge hollow called that forms when the ground collapses into a volcano's emptied magma chamber?
- Niagara Falls keeps a sharp edge because a hard cap of which rocks sits over softer shale?
- Emerald is a green variety of which mineral?
- What is a fossil called when a shell dissolves away and leaves only its hollow shape in the rock?
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 #850, Oct 30
- Rocks, Minerals and Volcanoes Quiz #849, Oct 29
- Rocks, Minerals and Volcanoes Quiz #847, Oct 27
- Rocks, Minerals and Volcanoes Quiz #846, Oct 26
- Rocks, Minerals and Volcanoes Quiz #845, Oct 25
- Today’s quiz, #851
Every day of the last 60 is in the puzzle archive.