What causes a fire tornado? A fire tornado is caused when the intense heat from the fire rapidly warms the air above the ground and makes it rise in a spiral. Fire tornadoes are fairly common, but it is very uncommon for someone to see them because you would need to be in the middle […]
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Why can you graft onto a plant? You can graft onto a plant because they don’t have an immune system. There are several ways of grafting plants, but the method I am thinking about is called cleft grafting. In cleft grafting, a cleft is cut into the trunk of a tree of the stalk of
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How do you get a star in Hollywood? You have to be nominated, have been in the business for over five years, and someone has to pay $75,000 on your behalf, along with a few other requirements as well. There are currently 2,790 stars in Hollywood. This increases by 30 every year. They can’t all
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Is category 5 the strongest a hurricane can be? A category 6 hurricane is possible, but not with the current method of measuring hurricanes. The hurricane category system is called the Saffir-Simpson Hurricane Scale. As the name suggests, it was invented by two people called Saffir and Simpson. Herbert Saffir was a civil engineer and
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Why do we use A4 as a paper size? We use A4 because it is a ratio of A0, which is 1 square meter of paper. The A system of paper was invented in Germany and adopted by almost all of the countries in the world in 1975. The only countries that don’t use it
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Does the Vatican have a secret library? No. The Vatican doesn’t have a secret library. There are some sections that are restricted, and there are some recent records that are off limits, but no more than many other government libraries and there are certainly some governments that are much more secretive. The Vatican library is
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Why do teeth have nerves? We have nerves in our teeth to provide us with feedback on what we are eating and how much pressure we are applying. Teeth appear to have nerves for three reasons. The first reason is because the inside of the tooth is living tissue with a blood supply and where
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How good is an elephant’s sense of smell? Elephant’s have a better sense of smell than any other animal on Earth. We know that our sense of smell is pretty basic when we compare it to a lot of other animals, but that makes sense because we have evolved for more of our brain to
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How much weight could a human lift? This is a difficult question to answer because there are too many variables, but possibly three or four tons. There are many ways of lifting weight and there are different records for each method. The heaviest weight ever lifted by a human is purported to be 2,844 kg,
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How did the Great Lakes form? They were dug out of the ground by glaciers and ice sheets, and then filled with water from melting ice. It is difficult to imagine how big the Great Lakes are. We see them on maps, but we don’t get a sense of how vast they are. Together, they
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