How does computer encryption work? Most computer encryption works by using prime numbers. What is computer encryption? It is basically a form of code. There have been many different types of code throughout history and they have slowly grown more and more complex. A Caesar cipher is a good example. If you take the word […]
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Can you eat the skin of all fruit and vegetables? Some fruits have a poisonous skin that it is better to avoid. The skin of some vegetables is too difficult to chew. What is a fruit? A fruit is a mature, ripened ovary, and the contents of the ovary. The ovary is the female part
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Why is Washington DC the capital of the United States? It was a compromise between the northern and the southern states. Washington DC was first used as the capital of America in November of 1800. It replaced the city of Philadelphia, which had been serving as the home of the Continental Congress and the capital
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How does a nuclear bomb work? By splitting the nucleus of an atom and releasing the energy. There are two ways to make energy from an atom: fusion and fission. Fusion is the process that happens in our sun. The sun fuses four hydrogen atoms together to make one helium atom. One helium atom has
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When did the British empire end? People take the return of Hong Kong to China on July 1st, 1997 as the end of the British Empire, but there are three points that could be taken as the end. The British empire has its start with Elizabeth I in about 1562 when she gave permission for
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What causes a tsunami? A very large and very sudden displacement of the ocean. A tsunami is a series of waves that are caused by a huge amount of water in the ocean suddenly being moved. It is different to a regular wave because the wave goes deep into the ocean. The word tsunami is
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When did globalization start? Depending on your definition, either with the Silk Road, the conquest of the Americas, after the Industrial Revolution, since World War II, or when the Soviet Union ended. The word “globalization” was coined in 1961. It was made popular in an article written for the Harvard Business Review in 1983: “Globalization
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Why did early humans leave Africa? They were probably forced out by climate change, but they could have left because of their rising intelligence. Let’s look at the evidence for why paleontologists believe humans developed in Africa and then look at why they left. Humans probably separated from the common ancestor we share with other
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Do any other animals cry? Yes, but only to lubricate their eyes. We have three types of tears. We have tears that lubricate and clean our eyes. These are called basal tears and they are created automatically. Every time you blink, the basal tears are spread across the eye and keep it wet and clear
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Why do soldiers break stride on a bridge? So that the vibrations don’t make the bridge collapse. This rule was introduced by the British Army in 1831. On 12th April 1831, the 60th Rifle Corps were returning from a military exercise and they crossed over the Broughton Suspension Bridge, which had been built five years
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