has density ~ 2.5-3g/cm^3 * Mantle: (2900km) thick‚ solid layer between the crust and the Earth’s core. The density of the mantle is 3-9 g/cm^3; the crust “floats” on the mantle * Outer Core: composed of liquid metals; 1800 km thick * Inner Core: innermost
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Kevin Navarrete Benham‚ Timothy ENC1101 Mon-Wed 9:30-10:45am 4-1-13 Formation of Earth and life on earth. About 4.57 Billion years ago our planet earth was formed. Earth contains many things that allows us to live. How was the Earth formed and why do we live in it is a question many of us would like to find out‚ but there are many answers to these questions and we cannot come up with a conclusion. The theory that is said to explain the formation of our earth is called the Big Bang
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of most of the energy on the planet. Solar System The Solar System consists of the Sun and its planetary system of eight planets‚ their moons‚ and other non-stellar objects. It formed 4.6 billion years ago from the gravitational collapse of a giant molecular cloud. The vast majority of the system’s mass is in the Sun‚ with most of the remaining mass contained in Jupiter. The four smaller inner planets‚ Mercury‚ Venus‚ Earth and Mars‚ also called the terrestrial planets‚ are primarily composed of
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The universe is a canvass of innumerable objects such as planets and stars. If you lay on your back on a warm summer night I would not doubt that you would be enchanted‚ enticed‚ and bewildered by the luster and mirth of all the stars you may even just wilt on the thought of how large they are. If you browse the sky regularly some notable features you you might know is the tactful North Star and the puny Little Dipper. Would you like to learn more about the unique characteristics of our galaxy and
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Astronomy flash cards Term Which of the following has your "address" in the correct order?A) you‚ Earth‚ solar system‚ Milky Way‚ Local Supercluster‚ Local GroupB) you‚ Earth‚ Local Group‚ Local Supercluster‚ solar system‚ Milky WayC) you‚ Earth‚ solar system‚ Milky Way‚ Local Group‚ Local SuperclusterD) you‚ Earth‚ solar system‚ Local Group‚ Local Supercluster‚ Milky WayE) you‚ Earth‚ solar system‚ Local Group‚ Milky Way‚ Local Supercluster | | Definition C) you‚ Earth‚ solar system‚ Milky
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1. Which of the following is not one of Kepler’s Laws of planetary motion? A) As a planet orbits the sun‚ it sweeps out equal areas in equal time. B) The closer a planet is to the sun‚ the slower it moves in its orbit. C) A planet’s orbit is an ellipse‚ with the sun at one focus. D) The more distant a planet’s orbit is from the sun‚ the longer it takes to complete an orbit. Table for Individual Question Feedback Points Earned: 1.0/1.0 Correct Answer(s): B 2. What are the three
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models of the Universe from the time of Aristotle to the time of Newton Aristotle (approx. 350 BC) His theory proposed: * Earth was round‚ rather than flat * Earth was the centre of the Universe and that the Sun‚ the Moon‚ and other visible planets‚ as well as a celestial sphere containing all the stars‚ revolved around the Earth‚ this model was known as a geocentric model (Earth in the centre) Aristarchus (240 BC) He has an alternative view; he suggested: * The Sun is much bigger than
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lips before but has never been a major subject. I personally think that this would work perfectly; it would eliminate the need to dispose of trash in other‚ more harmful ways. It would also reduce the litter and trash that is literally covering our planet. Sure there are facilities that specialize in getting rid of trash. There are even whole companies whose job it is to eliminate trash. But how fast are they going? Are these efforts by various groups enough to stop or even stem the flow of trash from
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the planet‚ about 20% of its radius‚ but it is still fifteen times heavier than the Earth. Next comes a layer of liquid hydrogen that is under the pressure of 10‚000‚000 Earth atmospheres. This changes the nature of the hydrogen in such a way that it is able to conduct electricity as metal does‚ so it is called "metallic hydrogen." This generates the planet’s magnetic field which is 20‚000 times stronger than Earth’s. This layer also makes up most of
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Jupiter is the largest planet in our solar system. It is twice as large as all the other planets combined. It has 28 known satellites. The earliest discovered moons date back to 1610 and were discovered by Galileo. This is of interest because a future mission to Jupiter is named after this astronomer. Most of the remaining moons were discovered in the 20th century with advancement of technology. Some are discovered using better telescopes and others with missions directed towards Jupiter. Some of
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