About Rocks, Minerals and Volcanoes Quiz #847
Rocks, Minerals and Volcanoes Quiz #847 was the quiz for Tuesday, October 27, 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 #847
- Which is hotter, the Earth's core or its crust?
- Which volcanic rock is so full of gas bubbles that it can float on water?
- Which of these is the largest?
- What is volcanic ash made of?
- Why does granite have bigger crystals than basalt?
- Which mineral, the natural form of table salt, forms cube-shaped crystals?
- Which clue first suggested that South America and Africa were once joined?
- About 2350 years ago, an explosive eruption of which BC volcano spread ash as far as Alberta?
- The "Great Dying", when most sea species vanished about 252 million years ago, ended which period?
- Which kind of earthquake wave arrives first at a seismograph?
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 #848, Oct 28
- Rocks, Minerals and Volcanoes Quiz #846, Oct 26
- Rocks, Minerals and Volcanoes Quiz #845, Oct 25
- Rocks, Minerals and Volcanoes Quiz #844, Oct 24
- Today’s quiz, #851
Every day of the last 60 is in the puzzle archive.