What happened to the water on other planets? It was either blown off, evaporated off, or is still there but frozen in ice. The first thing we have to consider is that not all of the planets have water. Pluto has obviously been deregulated and is no longer a planet. Earth has water. Saturn and […]
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Why did the Chinese government move to Taiwan? The Republic of China’s government lost a war with the Chinese Communist Party in 1949 and fled to Taiwan. We have to go back a bit further than 1949 to look at this question. People have lived on the island of Taiwan for thousands of years. Stone
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How does a rattlesnake rattle? They have loose hollow scales on the tips of their tails that strike each other when the rattlesnake rattles its tail. Rattlesnakes are a type of viper and are venomous snakes. There are many different types of venomous snakes, and they are divided by the position of their fangs and
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How much oil is left? About 1.5 trillion barrels, which is enough oil for roughly 47 years. There are several problems with this question. The first problem is that there are probably oil reserves that we don’t know about. The second problem is that oil drilling technology improves. The third is that estimates of how
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What are El Nino and La Nina? They are climate patterns that happen in the Pacific Ocean and affect weather all over the world. El Nino means “Little Boy” and La Nina means All of the climate in the world is connected and changes in one place can lead to climate events in other places.
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How do birds land? It depends on the size of the bird and whether it is a landing on land, a branch, or water. Generally, they lose as much speed as possible and grab on. The physics behind the way birds fly is the same as for airplanes. Anything that flies needs lift and thrust,
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How does an oil pipeline pump oil so far? They use centrifugal pumps to convert rotational energy into the energy that moves a fluid and there are more pumps every 100 km or so. There are 2,270,526 km of oil pipeline around the world. Not all of that is still in use, but it gives
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When does history start? This is a difficult question, but we have prehistory, protohistory, and then history. Protohistory is the point where prehistory becomes history and it is probably in about 3400 BC. This is an impossible question because there is no concrete date. History is said to begin with the development of writing systems
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How does a bicycle stay upright? It is a combination of things, but nobody seems to really know for definite. All of the reasons that a bicycle can stay upright are valid, but none of them seem to be required. You can alter many of them and, so long as the others are still in
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Geoffrey Chaucer was known as the Father of English Literature. This is obviously a topic that is only important to English speaking countries, but he was a significant force in the revitalization of English after the Norman invasion of England. Chaucer wasn’t the only writer that was operating at that time, but he was even
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