Everyday Science: Do You Know Why Things Work?
Most of us carry a rough working model of how the world behaves, assembled from school lessons, half-remembered documentaries and something a confident relative once said over dinner. It holds up perfectly well until somebody asks why.
This round asks why. Every question is about something you have met a hundred times, from a bannister that feels cold to salt scattered across a frozen path, and each has one answer that matches the physics rather than the folklore. The tempting wrong options are not inventions. They are the explanations people genuinely give.
See all the outcomes this quiz can land on, and what each one means →
Why the wrong explanations survive so well
Your skin has no thermometer in it. What nerve endings register is the rate at which heat leaves or enters, so a material that conducts heat away quickly reads as cold even when it is sitting at exactly the same temperature as everything else in the room. Steel moves heat several hundred times faster than oak does, which is why a metal bannister and a wooden one, side by side all night at the same temperature, feel nothing alike.
That single correction fixes a surprising amount. Tiles feel colder than carpet for the same reason. A stone bench in summer feels hot for the reverse reason. Cold is not a substance that arrives; it is heat leaving, and the speed of departure is what you actually notice.
Three more claims that deserve a second look
Old window panes are often thicker along the bottom edge, and the usual explanation is that glass is a very slow liquid still creeping downwards. It is not. The crown glass process spun molten glass into a disc of uneven thickness, and glaziers sensibly set the heavy edge at the bottom. At room temperature the sagging would take longer than the age of the universe to notice.
Seasons are not caused by distance from the Sun. The Earth's axis is tilted about 23.4 degrees, which changes how directly sunlight strikes each hemisphere and how long it stays in the sky. Awkwardly for the distance theory, the planet is closest to the Sun in early January.
The Coriolis effect is real but far too feeble to steer a bathtub. Basin shape and whatever swirl the water already had decide the direction. Careful experiments in large, perfectly still tanks, run in Massachusetts in 1962 and in Sydney soon after, did tease out the effect, and they needed a day of settling and a controlled drain to do it.
Seven questions, no verdict
This is a set of seven multiple-choice items written for entertainment. It has not been trialled on any sample, carries no norms, and cannot rank your scientific understanding against anyone else's. Guessing alone will hand you an answer or two, which tells you how loose the arithmetic is.
What the page can honestly offer is the explanations themselves, which are checkable in any physics or food-science reference you like. If one of them was new to you, the quiz did its job regardless of the number at the end.
