Another extreme, where classical physics does not work is the case of very large distances, which is when we investigate the universe. ... The universe is now expanding from this explosion, which is called the big bang. If all the matter in the universe put together had a mass above a certain mass called the critical mass, then the universe would be a closed universe and some day would collapse into the same massive object from which it started out and then would explode again creating a pulsating universe. If the universe had less mass than the critical mass, then the universe would keep on e...

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• Grade Level: High School

Facts ECONOMIC ACTIVITIES Our ancestors were economically self-sufficient. They produced what they needed. They engaged in various industries. Many of their products reached neighboring countries such as Siam, Cambodia, India, China, Japan, Borneo and the Moluccas. Agriculture. ...

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• Grade Level: High School

We are surrounded by colors no matter where we are that is why we can say that color is considered to be a fundamental feature of the universe.1 It is also a form of communication because the colors express our moods and even our personality, preferences and desires. ...

• Word Count: 11511
• Approx Pages: 46
• Grade Level: High School