Top 100 Hard True or False Questions

It is too narrow to be seen without aid, especially from the moon. You need a zoom lens or low orbit.

Bananas grow on massive herbaceous plants that look like trees but lack a woody trunk.

He was actually average height for his time. The myth likely comes from unit conversion errors between French and British measurements.

Peanuts are legumes, belonging to the same family as beans and lentils.

Botanically, strawberries are 'aggregate fruits'. Surprisingly, bananas and watermelons are true berries!

Bulls are red-green colorblind. They react to the movement of the matador's cape, not the color.

Goldfish can actually remember things for months and can be trained.

This is a myth. We use virtually every part of the brain, and most of it is active all the time.

Mauna Kea in Hawaii is taller when measured from its underwater base to its peak.

Pure water is actually an insulator. It's the impurities (like salts and minerals) dissolved in it that conduct electricity.

It only appears that way because the blunt tip of the hair feels coarser than the tapered natural tip.

They mostly change color to regulate their body temperature or communicate their mood to other chameleons.

Frankenstein is the name of the scientist. The monster has no name.

Bats can see quite well, some even better than humans. They just rely on echolocation for hunting in the dark.

Alcohol dilates blood vessels, moving warm blood to the skin, which actually makes you lose body heat faster.

Human blood is always red. It just looks blue through the skin due to the way light filters through tissue.

The sun emits all colors of light, making it essentially white. The atmosphere scatters blue light, making the sun appear yellow to us.

Sushi actually refers to the vinegared rice. Raw fish is called 'sashimi'.

Due to air resistance and the coin's shape, it wouldn't reach a lethal speed.

They were invented in California, likely by Japanese-American immigrants.

They most likely originated in Belgium.

There is no historical evidence for this. It was an invention of 19th-century opera costume designers.

This is a dramatic myth. They were rivals but likely respected colleagues.

Neurologists identify far more, including balance (equilibrioception), temperature (thermoception), and body position (proprioception).

They are the largest member of the dolphin family.

Botanically, coconuts are drupes, not nuts.

It contains cocoa butter but no cocoa solids, which technically disqualifies it as 'chocolate'.

They are the seeds of the coffee cherry fruit.

If sealed properly, honey can remain edible for thousands of years due to its low moisture and acidity.

Lightning frequently strikes tall buildings (like the Empire State Building) dozens of times a year.

It is actually the ulnar nerve running against the humerus bone.

The skin dries and shrinks, making nails and hair appear longer, but they do not grow.

Studies show no link between knuckle cracking and arthritis. The noise is just gas bubbles popping.

Scientific studies have failed to find a direct link. The hyperactivity is usually due to the excitement of the event (like a party).

His dentures were made of ivory, gold, lead, and human teeth, but not wood.

Antarctica is the largest desert because a desert is defined by low precipitation, not heat.

It likely started in the USA or France. It was called 'Spanish' because neutral Spain was the first to report on it freely.

Botanically, it is a fruit. Legally (in the US for tax purposes), it is a vegetable.

He said 'Elementary' and 'My dear Watson', but never the full phrase together in the original Conan Doyle stories.

Warts are caused by a human virus (HPV), not by toads.

They do echo, but the sound is often hard to distinguish.

He only cut off a portion of his left earlobe.

They were likely a hoax created in the 18th or 19th century to sensationalize the past.

There is no evidence she ever said this. It was a phrase attributed to other royals before her time.

Flight recorders are actually bright orange to make them easier to find.

They lay their heads flat on the ground to hide, but they don't bury them.

This myth was popularized by a staged Disney documentary. They migrate, but they don't jump off cliffs on purpose.

Their fur is transparent/white, but their skin is black to absorb heat from the sun.

Most species have an odd number of leg pairs, so having exactly 100 (50 pairs) is impossible for them.

They are technically not spiders (they are harvestmen), and they have no venom at all.

There are no floors or rooms inside the tower, just a hollow cylinder with stairs.

Oxford began teaching as early as 1096; the Aztec Empire began around 1428.

The Pyramids were built c. 2560 BC; Cleopatra lived c. 30 BC; the Moon landing was 1969.

Australia has a huge population of wild camels that are exported for meat and racing.

It symbolizes purity and strength and is seen as the natural enemy of the lion (England's symbol).

They are fruits, specifically a large berry containing a single seed.

But the shell is toxic (containing urushiol), which is why you never see cashews in the shell at stores.

T-Rex and Stegosaurus were separated by millions of years more than T-Rex and modern humans.

Diamonds are formed from carbon deep in the Earth's mantle, usually predating coal formation.

Glass is an amorphous solid. Old windows are thicker at the bottom due to manufacturing techniques, not melting.

It is a chemical reaction between iron, oxygen, and moisture.

Oxygen itself does not burn; it supports combustion. Fuel burns, oxygen helps it.

Steel is an alloy made primarily of iron and carbon.

It is virtually invisible from the moon.

Most fruits hold their seeds inside.

Real wasabi is very expensive and loses flavor quickly, so horseradish is used as a substitute.

It was invented in Tijuana, Mexico, by an Italian immigrant named Caesar Cardini.

It was created by a Greek-born Canadian in Ontario in 1962.

Double-blind studies have failed to confirm 'Chinese Restaurant Syndrome'. It is naturally found in tomatoes and cheese.

It actually preserves nutrients better than boiling because it cooks faster and uses less water.

Cocoa solids contain small amounts of caffeine.

It still contains a small amount of caffeine (usually 1-3%).

The entire tongue can sense all tastes. The map was a mistranslation of a German paper.

It turns dark red, never blue.

Their skeleton is made entirely of cartilage.

The female deposits eggs into the male's pouch, and he carries them to term.

If the dominant female dies, the dominant male changes sex to become the female.

Their sedentary lifestyle helps them conserve energy.

It is a real typographic term.

It is technically called an 'octothorpe'. 'Hashtag' refers to the tag usage.

A murder of crows.

This became the standard after St Andrews settled on it in 1764.

They are often used interchangeably, but at a professional level, there are slight rule and equipment differences.

Europe, Asia, Africa, The Americas, and Oceania.

300 is a perfect game.

They have qualified for every tournament since 1930.

It is 26.2 miles (42.195 km). The extra 0.2 was added to finish in front of the Royal Family in 1908.

It was invented by a Swiss engineer who noticed burrs sticking to his dog. NASA just popularized it.

The internet is the infrastructure; the Web is a service built on top of it.

They were designed to prevent mechanical typewriter jams by separating commonly used keys.

It is named after the comedy group 'Monty Python'.

It actually stands for nothing. It was just a catchy marketing term.

A moth was found trapped in a relay of the Harvard Mark II computer in 1947.

It was invented by an unknown person or group under the name Satoshi Nakamoto.

It is the protocol used for transmitting web pages.

They are made of liquid water droplets or ice crystals. Water vapor is invisible.

Most fire on Earth is a hot gas. Only very hot fires (like lightning or stars) become plasma.

It fits the definition of an even number (divisible by 2 with no remainder).

Water is denser, allowing sound waves to move more efficiently.

This is 0 Kelvin, the point where molecular motion stops.