How long can a cable car be? The longest cable car in the world is the Norsjö ropeway in Sweden and it is 13.2 km long. This is probably close to the upper limit of how long a cable car cable can be. The 13.2 km part is just one section of the Norsjö ropeway, […]
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Why does Canada have two official languages? Canada has ended up with two official languages because of European colonialism. Canada is not the only country in the world to have more than one official language. There are over 30 altogether. Not all of them, but with many you can see in the impact of European
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Why are so many arrowheads made of flint? Flint wasn’t the only material, but it is a fairly common rock, easy to break into flakes and it can be sharpened fairly easily. The oldest arrowhead that has been found has been dated to 74,000 years ago. They were found in the lowlands of where northwest
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Why don’t bats get sick? Because their immune response doesn’t cause much inflammation, because they have proteins that stop the viruses leaving their cells, and because the viruses have evolved to live with them. Bats do get sick and some viruses are lethal to them. They also carry a lot of viruses that can jump
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What is a superconductor? It is a state of matter for a material where there is zero resistance to electricity. We need to start by looking at what electrical resistance is. Electrical resistance is, rather obviously, a resistance to the flow of electricity. An electric current results when electrons flow from an area with a
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Why did people think Australia was there? They believed that the continents in the northern hemisphere and the southern hemisphere should balance each other out. In this question, I am talking about Europeans, particularly the British people, who would go on to colonize the island and subjugate the people that lived there. The aboriginal people
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Why is there a statute of limitations? Because after a certain amount of time has passed, evidence and people’s memories may no longer be dependable enough to fairly charge somebody and the evidence needed to prove their innocence may no longer exist. This is a difficult question because not every country has a statute of
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Why do volcanoes become dormant? Volcanoes become dormant because the magma in the Earth’s mantle can no longer reach the volcano. There are roughly 1,500 active volcanoes on Earth at the moment and 70 of them erupt every year. Most of those eruptions are small, but some are much bigger and have more of an
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What noise would the sun make? The sun doesn’t make a sound in the conventional sense because there is no air for the sound waves to travel through. Sound is a pressure wave that moves through a medium. The energy is passed from molecule to molecule until it runs out and the sound fades away.
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How did McCarthyism reach such a level? There was a genuine fear of communism in America that McCarthy used to accelerate his rise to power. McCarthyism is named after Joseph McCarthy, who was a senator from Wisconsin until his death in 1957. McCarthyism started in 1947 and it ended in 1959, two years after McCarthy
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