How gemstones are formed? Minerals form under various conditions in the earth. Most gemstones form in the Earth’s crust; the top layer of the Earth‚ with a depth of 3 to 25 miles. Only two gemstone varieties - diamond and peridot - form in the Earth’s mantle‚ which represents 80% of the Earth’s volume. The mantle consists mostly of molten rock called magma with a solid upper layer. A few gemstones form in the mantle‚ but all gems are mined in the crust. The crust is made up of three kinds of rock
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Gardener‚ all of which arose through generations of a trade passed down through a family. In Pearl S. Buck’s The Good Earth‚ Wang Lung struggles with his own identity as a peasant farmer transitioning into a coveted position of power and wealth‚ in which he need not labour as he had always done. However‚ despite his abundance‚ he finds himself most satisfied in his fields‚ working with his own good earth‚ than the pleasures of wealth can possibly
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101 Ways to Save Mother Earth 1. Automobiles stay ahead of everything in the emission of carbon‚ so as for as possible try to avoid using your automobile for short distances. 2. As much as possible use cotton bags or paper bags than plastic bags. 3. Start using the recycle base articles‚ change from plastic to paper 4. We can change ourselves to use cotton cloths than silk rayon cloths. 5. Instead of everybody using their own vehicle if some of you are working in the same area
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WHAT IF EARTH STOPS SPINNING? As we all know‚ planets spin. Our solar system was formed billions years ago from a spinning cloud of gas and dust. Nowadays‚ the Earth is turning at more than 16 hundreds kilometers an hour‚ bus it’s gradually slowing down about two seconds every one hundred thousand years. BUT WHAT WOULD HAPPEN IF THAT SLOWDOWN SPEEDS UP? If the speed of rotation were reduced by about one kilometer per hour‚ traffic air would face serious consequences. Most commercial aircrafts
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What is a Theory? We often hear someone say “That’s just a theory” or on the contrary - “In theory and in practice‚ it always works.” This term may indeed hold in itself a somewhat ambiguous undertone‚ and lead to confusion and misuse. Let’s look at the origin of the word; according to an etymology dictionary‚ theory derives from the Greek “theoréo” which means ‘to look at’‚ ‘to observe’. The definition tells us that one must firstly observe a phenomenon so that a theory about a certain aspect
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References to the moon Moon is the Leitmotif of the book -> title Is mentionend several times in the story Which effect does the moon have on Marco and his story? Quotes Book begins and ends with references to the moon Beginning: story of Marco begins in the summer when the first man landed on the moon (p.1) End: Marco stands at the beach‚ moon cames up from behind the hills… Marco can’t keep his eyes of the moon until it disappears in the darkness (p. 298) Moon is important for the
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Earth is the third planet from the Sun‚ and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System’s four terrestrial planets. It is sometimes referred to as the world or the Blue Planet.[22] Earth formed approximately 4.54 billion years ago‚ and life appeared on its surface within its first billion years.[23] Earth’s biosphere then significantly altered the atmospheric and other basic physical conditions‚ which enabled the proliferation
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EARTH the planet on which we live land as opposed to the sea‚ the air‚ etc. the material in which plants grow the inhabitants of this planet‚ especially the human inhabitants: The planet on which we live; the world: “the diversity of life on earth”. The earth is the third planet from the sun in the solar system‚ orbiting between Venus and Mars at an average distance of 90 million miles (149.6 million km) from the sun‚ and has one natural satellite‚ the moon. It has an equatorial diameter of 7‚654
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Question: What is the circumference of the earth? The circumference of the earth was at one time an interesting question and today an important piece of information. It is a question people have been trying to answer as early as 200 BC. Today‚ modern scientists and equipment – such as satellites and other similar devices – tell us the circumference of the earth is 40‚075 kilometers when measured at the equator‚ and though the ancient peoples did not have access to such advanced technology and equipment
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One of the most interesting theories that cannot be observed is the Moon’s magnetic field‚ and why there is not one anymore. Moon rocks Colwell 7 brought back from the Apollo age astronauts shows that at some point the moon did have a magnetic field as strong as the Earth’s at some point. From analyzing the way the rock formed‚ the scientists can determine how long the Moon had a magnetic field. From their research they have discovered that a magnetic field persisted for much longer than it should
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