Daily Trivia Quiz - Day 142 (2026-03-01)

Question 1

A glass-bulb toy called a Crookes radiometer has black-and-white vanes sealed inside. The vanes can start spinning without any push or motor. What drives the motion?

Accepted Answer

Light

Question 2

In the 1800s, visitors left small cards at houses, and staff read subtle clues like folded corners and visit timing. What were they judging?

Accepted Answer

Social status

Question 3

Deep underwater, explorers have found pond-like areas with clear edges resting on the seafloor. Why don't these pools quickly mix into surrounding seawater?

Accepted Answer

They are much denser

Question 4

After many landings, airport runways can become slick from tire buildup. What do crews often use to restore tire grip?

Accepted Answer

High-pressure water

Question 5

On snowy mountain routes, some roads run through long wooden roofed sections. What hazard are these structures designed to push over the road instead of onto it?

Accepted Answer

Avalanches

Question 6

When high voltage is applied to wood, branching burn marks can spread like tiny trees. What natural scene do these patterns resemble?

Accepted Answer

Lightning branches

Question 7

Certain eyeglass frames are made from Nitinol (a nickel-titanium alloy) that can handle accidental bending without permanent damage. What surprising behavior does this metal show afterward?

Accepted Answer

It springs back

Question 8

At some bakeries, the small plastic clip on a bread bag is not random. What can its color quietly tell workers?

Accepted Answer

Bake day

Question 9

In older American cities like New York and Boston, small iron doors were once built into sidewalks near buildings. What were they mainly used to drop into basements?

Accepted Answer

Coal

Question 10

In Warsaw, one unusual home was built in an extremely thin gap between buildings, under 1.5 meters wide. What does this prove about tiny urban spaces?

Accepted Answer

They can be livable