Why were the Easter Island Moai statues built? The Moai statues were built on Easter Island by the Polynesians to embody the spirits of their ancestors, not to appease the gods as their island died. There are 887 known statues on the island at the moment, but there are more that are still buried and […]
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What is a black box made of? There is no one single material, but they have to be able to survive any of the conditions that a crashing aircraft might encounter. We call them black boxes, but they aren’t actually black. In fact, a literally black black box would be very hard to find. They
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Why do stars ignite? Stars ignite when a cloud of gas and dust forms a big enough mass where the gravity creates enough pressure for nuclear fusion to start. Stars form out of masses of gas and dust that are floating around in the universe. These gases and dust slowly bump into each other and
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Were dinosaurs warm-blooded or cold-blooded? The majority of dinosaurs were most likely warm-blooded. “Dinosaur” comes form the Greek “deinos”, which means terrible, and “sauros”, which means lizards. They are terrible lizards, which would lead many people to think that they were cold-blooded, as most lizards are today. Lizards have evolved to be cold-blooded because it
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What causes rogue waves? There are many reasons why rogue waves can form but three of the most common theories are modulational instability, constructive interference, and another current. Tsunamis can be thought to be rogue waves, but they aren’t. They have a much longer wavelength. The majority of the waves in the sea are caused
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What is Maxwell’s Demon thought experiment? Maxwell’s Demon’s thought experiment is a theoretical way that the Second Law of Thermodynamics could be challenged. The Second Law of Thermodynamics is the law that explains entropy. It says that any system always heads from order towards disorder and the only way to get it back to order
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What is the problem with invasive species? The problem with invasive species is that the ecosystem they are invading has not evolved to deal with them, and they can cause widespread damage. Plants and animals have always managed to spread outside of their own ecosystem, but they are always controlled by the conditions or by
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Did the Hundred Years War last for a hundred years? No, the Hundred Years War didn’t last a hundred years. In fact, it lasted for 116 years. The thing we need to understand before we start talking about the Hundred Years War is that it was not one continuous war that lasted for over a
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What is the loudest animal? The loudest animal in the world is the sperm whale. An adult sperm whale can produce clicks that are 230 decibels. Sound is measured in decibels, which is a logarithmic system. A logarithmic system means that the next level is ten times higher than the previous level. So 20 dB
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Why does time slow down as you go faster? Time slows down as we go faster because our perception of time gets distorted. This all comes down to the fact that the speed of light in a vacuum is constant. Light, in a vacuum always travels at C, which is 299,792,458 m/s. The difficulty comes
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