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Science quiz

Seven groups of seven: the science sort

Forty nine names in one tray, seven for each of seven boxes. Is Trapezium a bone or a cloud? Is Triassic a period or a nerve?

Format
Sort into groups
Items
49 to sort
Limit
5:00
Level
Hard
Checked
2026.10.03
Names
49
Groups
7
Time limit
5:00
A wrong box
Is marked, and the item moves to the right one
  • Tap an item, then tap its box. Or drag the item onto the box.
  • Each box shows how many items it is still owed.
  • Keyboard: the arrow keys pick an item and a number key drops it in that box.
  • Pause whenever you like (Esc). The board hides while the clock is stopped.

Sort each name into the group it belongs to. The tray and the boxes appear when you start.

About this quiz

Each box is a list from another Ribbia science quiz, and seven names are dealt from it. A name that sits on two of the lists is never dealt.

  • Each box shows how many names it is still owed, so the count helps when the names run out.
  • The tray can be put in A to Z order or left shuffled.
  • A name dropped in the wrong box is marked and moved to the right one.

Sources

  1. [1]NASA. Planetary Fact Sheet (metric).
  2. [2]NOAA National Weather Service. JetStream: Ten basic clouds.
  3. [3]U.S. National Library of Medicine. Medical Subject Headings: Cranial Nerves.
  4. [4]U.S. National Library of Medicine. Medical Subject Headings: Carpal Bones.
  5. [5]National Cancer Institute, SEER Training. Anatomy and physiology: review of the body.

Last checked October 3, 2026

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