Daily Trivia Quiz - Day 189 (2026-05-08)

Question 1

Why can tree roots clog sewer pipes?

Accepted Answer

Roots grow toward tiny leaks and enter the pipe

Answer

Roots are attracted to metal manhole covers

Answer

Sewage makes roots grow only downward

Answer

Concrete turns into fertilizer underground

Question 2

When Momofuku Ando invented instant noodles in 1958, how were they initially priced and perceived by the public?

Accepted Answer

As a luxury item, costing much more than fresh noodles

Answer

As emergency military rations for soldiers

Answer

As cheap, low-grade food for poor students

Answer

As a medical product for digestive issues

Question 3

Why can a train entering a tunnel create a rush of air at the other end?

Accepted Answer

It pushes air like a piston

Answer

Rails generate wind by magnetism

Answer

The tunnel breathes through groundwater

Answer

Train wheels squeeze oxygen from concrete

Question 4

Why are tunnel boring machines often left underground after a project?

Accepted Answer

Removing them can cost more than leaving parts behind

Answer

They must remain to support the tunnel lining

Answer

They are reused as permanent ventilation fans

Answer

They keep groundwater from entering the portals

Question 5

Why are platform screen doors useful beyond stopping people from falling onto tracks?

Accepted Answer

They help separate station air from tunnel air

Answer

They make trains use different wheels

Answer

They remove the need for signals

Answer

They let platforms be narrower without limits

Question 6

Why can brighter streetlights sometimes make visibility worse?

Accepted Answer

Glare can wash out contrast

Answer

Bright light stops shadows from forming

Answer

Road paint becomes transparent

Answer

Human eyes only work in dim light

Question 7

Why do many public exit doors open outward instead of inward?

Accepted Answer

A crowd can push them open while escaping

Answer

Outward doors are always cheaper to install

Answer

They block less smoke from entering rooms

Answer

They make hinges impossible to remove

Question 8

What can frost or large ice crystals inside frozen food packaging suggest?

Accepted Answer

The food lost moisture and it refroze elsewhere

Answer

The food has become fresh again

Answer

The package contains added sugar

Answer

The freezer is too cold to preserve food

Question 9

Why do most food cans have a slightly concave (inward-curved) bottom instead of a flat one?

Accepted Answer

The curved shape distributes pressure and stress more evenly

Answer

It proves the can has not been dented

Answer

It keeps the paper label centered

Answer

It lets the food cool without refrigeration

Question 10

What is the purpose of a very expensive item on some restaurant menus?

Accepted Answer

It can make nearby items seem more reasonable

Answer

It guarantees the cheapest item sells out

Answer

It removes the need for a dessert menu

Answer

It changes the restaurant's health rating