Rock and Mineral Quiz

[Ishiwatari's Page] [Ishiwatari Laboratory] [Japanese Version]
[Results in 2000] [Results by 2006]

Ten easy questions about rocks and minerals are given below. For each question, select one answer out of four examples by clicking a circle (radio button) on the left of your answer. To change your choice, simply click another. The previous selection will be automatically canceled. After answering all questions, note your name (nickname is acceptable, and short comment is welcome) and click "OK" button. You will get the result immediately, if you answer all ten questions and mark your name. Please take it easy, and enjoy our quiz.

1. How quartz can be distinguished from glass, if both are colorless, inch-size balls?

Quartz is much heavier than glass.

Quartz looks blue under ultraviolet light.

Quartz shows interference rings between polarizers.

One can see doubled alphabets through quartz put on a printed paper.

Reference page: How to distinguish quartz from glass (see photos)

2. What is the most abundant mineral in the common rocks on the earth's surface?

quartz feldspar mica pyroxene

 

3. What is the rock flooring the oceans, which cover 70% of the earth's surface?

basalt peridotite rhyolite granite

Reference page: Ophiolite

4. What is the rock called "pumice", which floats on water?

fossil tree fossil coral diatom mudstone volcanic ejecta

 

5. How heavy is a common rock in comparison with water of the same volume?

about the same about three times about seven times about fifteen times

 

6. What is the world-biggest metal ore piece found from river sand in Hokkaido?

iron sand placer tin placer gold placer platinum

 

7. "Chondrites" are the majority of meteorites. What is the earth's analogous rock?

basalt peridotite rhyolite granite

Reference page: Neagari Meteorite

8. What is formed by the fault movement in the earth's crust?

pigeonite deerite tiger's eye horse stone

 

9. What color generally represents granite in geologic maps?

red yellow blue white

Reference page: 1:200,000 Maps of the Geological Survey of Japan

10. What is the black stone called "obsidian", of which ancient stone knives were made?

basalt peridotite rhyolite granite

 

Do you enjoy our quiz? Please confirm that you have answered all ten questions. Then, please note your name in the box below (nickname and short comments are acceptable), and click "OK" button next. The computer will inform you the result immediately. If any answer or your name is missing, the computer will respond you with an error message.

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2000/02/06 Established, 2006/12/06 Revised