Daily Trivia Quiz - Day 217 (2026-06-16)

Question 1

What idea did the name Bluetooth borrow from a medieval king's nickname?

Accepted Answer

The idea of uniting different systems, inspired by Harald Bluetooth

Answer

The appearance of the first blue wireless chip

Answer

An engineering abbreviation for blue tool box

Answer

A short-range signal first used in dental equipment

Question 2

Why do people sometimes change their own answer when everyone else in a group agrees on a different one?

Accepted Answer

Conformity effect

Answer

Confirmation bias

Answer

Loss aversion

Answer

Peak-end rule

Question 3

How can waste from large marine animals help the ocean surface absorb more carbon?

Accepted Answer

It brings nutrients back to the surface, helping phytoplankton grow

Answer

It directly turns carbon dioxide in seawater into salt

Answer

It forms an oil film that stops evaporation

Answer

It grinds seafloor rocks into carbon-absorbing powder

Question 4

The farewell word goodbye was originally shortened from what kind of expression?

Accepted Answer

A blessing such as God be with ye

Answer

A distress signal used by sailors

Answer

An Old English word meaning silence

Answer

A merchant's phrase used after receiving payment

Question 5

Why do many ballpoint pen caps have a small hole at the top?

Accepted Answer

To allow some airflow if the cap is accidentally swallowed or lodged in the mouth

Answer

To let ink flow back into the refill

Answer

To make the cap magnetically stick to a desk

Answer

To check the color of the pen refill

Question 6

In Japan, chopsticks standing upright in a bowl of rice usually evoke what kind of scene?

Accepted Answer

A ritual offering or food for the dead

Answer

Celebrating a new store opening

Answer

Showing that the rice is too hot

Answer

Reminding the host to pour tea

Question 7

Why do convenience stores often place gum, batteries, and small snacks next to the checkout counter?

Accepted Answer

They are low-effort impulse buys while customers wait

Answer

Customers must buy spare items before entering the store

Answer

These products stay fresher when kept away from refrigerators

Answer

Checkout lighting lowers the manufacturing cost

Question 8

Besides looking grand, what does an open multi-story atrium in a mall help shoppers see?

Accepted Answer

Stores and circulation routes across different floors

Answer

The full layout of underground utility pipes

Answer

The stockroom inventory of every shop

Answer

The concrete formula used in the building

Question 9

When people stare at the floor numbers in an elevator, what pressure does that shared focus mainly reduce?

Accepted Answer

The social pressure of standing very close to strangers

Answer

The voltage produced by the elevator motor

Answer

The spacing error between floor buttons

Answer

The wind pressure on the building facade

Question 10

Why do people overestimate how much others notice their embarrassing moments?

Accepted Answer

Spotlight effect

Answer

Bystander effect

Answer

Mere exposure effect

Answer

Anchoring effect