Science quiz
The five dwarf planets
Five dwarf planets are officially recognised. Each has a clue; type them in any order.
- Format
- Type them all
- Items
- 5 answers
- Limit
- 1:30
- Level
- Medium
- Checked
- 2026.10.03
- Answers
- 5
- Time limit
- 1:30
- 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.
Name the five recognised dwarf planets.
| Clue | Dwarf planet |
|---|---|
| The largest object in the asteroid belt | Not found yet |
| Discovered by Clyde Tombaugh in 1930 | Not found yet |
| One of the fastest rotating large objects in the solar system | Not found yet |
| The second brightest object in the Kuiper Belt | Not found yet |
| One of the largest known dwarf planets | Not found yet |
About this quiz
The International Astronomical Union reclassified Pluto as a dwarf planet in 2006. Five bodies are recognised so far, and the IAU says there may be more than a hundred waiting to be discovered.
- Pluto was long counted as the ninth planet before it was reclassified in 2006.
- Ceres is the only dwarf planet in the inner solar system.
- Ceres sits in the asteroid belt between Mars and Jupiter.
Sources
- [1]NASA. Dwarf planets.
Note on the data. The five recognised dwarf planets and the clue for each follow NASA's dwarf planets overview, checked on 3 October 2026.
Last checked October 3, 2026
More quizzes like this
| No. | Quiz | Section | Format | Items | Added |
|---|---|---|---|---|---|
| 01 | Solar System Knockout: Size, Mass, Gravity and More Ten worlds from the eight planets and five dwarf planets, nine rounds. Each round names a measure: knock out the highest world still standing. Science / Strongest link / 9 rounds | Science | Strongest link | 9 | 2026.10.03 |
| 02 | Solar system criteria: one world fits them all Spins backwards, less dense than 2 g/cm³, one of the eight planets? Each prompt lists two or three criteria that only one world meets. Click it. Science / Pick the match / 9 to match | Science | Pick the match | 9 | 2026.10.03 |
| 03 | Planet, dwarf planet or moon? Triton, Makemake, Titania, Ceres: 34 worlds of the solar system, one at a time. Is it a planet, a dwarf planet or a moon? Click the right box. Science / Sort into groups / 34 to sort | Science | Sort into groups | 34 | 2026.10.03 |