True or False: Science Myths Quiz
Some science facts sound fake and some myths sound true. See how well you can separate popular misconceptions from surprising reality in this quick true-or-false challenge.
About this quiz
Plenty of science myths sound believable until you stop and test them. This quiz explores famous claims about the brain, lightning, goldfish, bananas, space, and more, mixing everyday misconceptions with facts that seem too strange to be real.
As you work through each true-or-false question, you can see how your instincts hold up against common scientific myths. By the end, you will have a clearer sense of what you actually know, where you were fooled, and which facts are more surprising than fiction.
Possible results
🧪 Myth-Curious Rookie
SCORE RANGE: 0 – 49
Science is full of surprises, and this round caught you off guard more than a few times. Some of these myths have been repeated so often they feel true — that's exactly what makes them tricky. The real science behind them is often more interesting than the myth itself.
🔍 Next step: Revisit the explanations for each question — you might be surprised how much of what you thought you knew turns out to be folklore.
🔬 Lab Apprentice
SCORE RANGE: 50 – 69
You've got a solid foundation, catching some myths while still getting fooled by a few sneaky ones. A little more digging into 'well-known facts' will sharpen your instincts.
🦫 Keep going: Try running some of these myths past friends and see how many they get wrong too.
🧠 Fact-Check Enthusiast
SCORE RANGE: 70 – 89
Impressive work — you spotted most of the myths and held firm on the surprising truths. You clearly know how to separate popular belief from actual evidence.
⭐ Nice instincts: A few tricky ones slipped by, but your science radar is clearly well-tuned.
⚗️ Myth-Busting Mastermind
SCORE RANGE: 90 – 100
Outstanding! You correctly called nearly every myth and fact in this quiz — proof that you don't just believe what sounds true, you check it.
🏆 Certified skeptic: Go forth and correct your friends' dinner-party science claims with confidence.
Quiz questions
Humans only use 10% of their brains.
Lightning never strikes the same place twice.
A single bolt of lightning is hotter than the surface of the sun.
Goldfish have a memory span of only three seconds.
Honey found in ancient Egyptian tombs is still edible today.
Glass is actually a slow-moving liquid, which is why old windows are thicker at the bottom.
Bananas are naturally slightly radioactive because of their potassium content.
The Great Wall of China is the only man-made structure visible from space with the naked eye.
Octopuses have three hearts.
Napoleon Bonaparte was unusually short compared to his contemporaries.
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