08-Jan-2026 Theme: 'Rings'

(1) What is the science of dating past events by studying annual growth rings in trees?

Answer: Dendrochronology.

(2) What is the nest of a ringtail possum called? (bonus: where does the word originate?).

Answer: Drey. (bonus: English term for a squirrel’s nest).

(3) What is the average size of a blue-ringed octopus (arms included)?

Answer: 10-20 centimetres.

(4) The age of a bony fish can be determined by examining the annual rings laid down in what bone-like structure in its head?

Answer: Otolith.

(5) What is an elastrator?

Answer: A device used to apply rubber rings to castrate livestock (or for docking tails etc.).

Archive: