Science quiz
Science answers that start with I
Every answer on this board begins with I. The clues are a mixed bag: elements, units, planets, rocks, bones and whatever else the letter allows. Type the answers in any order.
- Format
- Type them all
- Items
- 8 answers
- Limit
- 2:00
- Level
- Medium
- Checked
- 2026.10.03
- Answers
- 8
- Time limit
- 2:00
- Order
- Any order
- Matching
- Case and accents ignored
- Type an answer; it files itself the moment it matches.
- One answer can fill several slots.
- Give up at any time to see what you missed.
- Pause whenever you like (Esc). The board hides while the clock is stopped.
Answer each science clue. Every answer starts with I.
| Clue | Answer |
|---|---|
| Moon that is the most volcanically active body in the solar system | Not found yet |
| A major moon of Saturn | Not found yet |
| Electromagnetic spectrum: region 3 of 7, from longest wavelength to shortest | Not found yet |
| Layer of the Earth or its atmosphere: solid, about 1,250 km thick | Not found yet |
| Element 26, symbol Fe | Not found yet |
| Element 49, symbol In | Not found yet |
| Element 53, symbol I | Not found yet |
| Element 77, symbol Ir | Not found yet |
About this quiz
A mixed science round with one rule: the answer always starts with I. Knowing the first letter helps more than you might expect, and less than you would like.
- There are 8 clues on this board, 4 of them for chemical elements.
- Element clues give the atomic number and the symbol.
- Spelling is forgiving about capitals, accents and hyphens, and both British and American element spellings are accepted.
Sources
- [1]NASA. Moons of our solar system.
- [2]NASA. Moons: facts.
- [3]NASA. Jupiter moons.
- [4]NASA. Saturn moons.
- [5]NASA. Uranus moons.
- [6]NASA. Neptune moons.
- [7]NASA. Tour of the Electromagnetic Spectrum.
- [8]U.S. Geological Survey. This Dynamic Earth: Inside the Earth.
- [9]NASA. Earth's atmosphere: a multi-layered cake.
- [10]PubChem, National Institutes of Health. Periodic Table of Elements.
Last checked October 3, 2026
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