Physical Science

The Moon is about 2000 miles in diameter and it has a mean distance from Earth of about a quarter of a million miles. It orbits the earth every 27.3 days and rotates upon its axis over the same period,…
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The origins of the V2 rocket lay in Germany’s attempts to get around the arms restrictions imposed by the Treaty of Versailles following WWI. Rockets were not included in the list of restricted weapons and in the early 1930s the…
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Cadmium is a potent poison. It has no role whatsoever in the human body and exposure to it causes cancer. We only use it in industry and art when we must, and then we must take strong precautions. Cadmium, symbol…
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The first man (or woman) to land on Mars has probably been born already. It is the planet most suitable for humans to try to live on, but despite this is quite inhospitable and hard to reach. At its closest,…
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Atomic Symbol: CoAtomic Number: 27Atomic Weight: 58.9332Atomic Category: Transition metalsMelting Point: 1495 degrees CelsiusBoiling Point: 2927 degrees CelsiusAppearance: Metallic with gray tinge One of the oldest known transition metals, Cobalt has been around for centuries. Sculptures and jewelry from the…
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I was an excited child of only 10 years old enjoying my summer vacation from school on July 20, 1969. I was excited because I had a fascination with space travel and the possibility of visiting other worlds. I had…
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What on earth would we do if hair dye was taken away from us? It is a wondrous substance that helps to cover our grey hair and keep us looking younger, or it gives us that extra, all important boost…
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Gold is an ancient metal. Too soft for use in its native state, it was alloyed with silver, zinc, copper, or nickel for use in jewelry or coinage. Now it is deposited into integrated circuits in tiny quantities, used in…
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The Sun, just one of more than 100 billion stars in our galaxy, is the largest object in our solar system. It contains more than 99.8% of the total mass of the solar system (with Jupiter containing most of the…
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Beryllium Symbol: Be Atomic Number: 4 Atomic Mass: 9.012182 amu (atomic mass units) Melting Point: 1278.0 C (1551.15 K, 2332.4 F) Boiling Point: 2970.0 C (3243.15 K, 5378.0 F) Number of Protons: 4 Number of Electrons: 4 Number of Neutrons:…
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