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Types of lever – Simple machines – Physics

By |2018-05-31T11:49:32+00:00August 17th, 2017|Physics|

Types of lever: What kind of lever is a see-saw? Three types of lever All levers fall into one of three types of lever. How can we tell which lever is in which class? The main difference is what order the different parts come in. Every lever has three parts: the force, the [...]

History of farming – the beginning of agriculture

By |2018-04-19T15:03:04+00:00June 12th, 2017|Economy, West Asia|

History of farming: A field of wheat When did people start farming? People did not farm as a major way of getting food until around 12,000 BC. About that time, there was a climate change that made more food plants grow than before. Everybody got more to eat with less work than earlier [...]