Daily Trivia Quiz - Day 39 (2025-11-18)

Question 1

What causes your fingers to wrinkle in water?

Accepted Answer

Nervous system response for better grip (not osmosis)

Question 2

Which common appliance was effectively banned from private ownership in the Soviet Union until the 1980s?

Accepted Answer

Photocopiers (tightly controlled to stop uncensored information)

Question 3

What causes airplane contrails (vapor trails) to appear?

Accepted Answer

Hot exhaust condensing in cold air creates ice crystals

Question 4

Which common vegetable was purple before selective breeding made it orange?

Accepted Answer

Carrot

Question 5

What unexpected skill can octopuses perform that amazes scientists?

Accepted Answer

Use tools and open jars from inside

Question 6

What causes the 'cotton mouth' feeling when you're nervous or scared?

Accepted Answer

Fight-or-flight response reduces saliva production

Question 7

What causes airplane cabin air to be so dry?

Accepted Answer

High altitude air has extremely low humidity

Question 8

What causes the 'brain freeze' headache when eating cold food too fast?

Accepted Answer

Blood vessels in the roof of your mouth rapidly constricting then dilating

Question 9

Why do flamingos stand on one leg?

Accepted Answer

To conserve body heat (reduce heat loss through legs)

Question 10

What unexpected material was used as a medicine in ancient Egypt?

Accepted Answer

Moldy bread (early antibiotic)