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Chapter 6 Physics
Chapter 6 Physics

... 2. Assuming that a rocket is aimed above the horizon, does it matter which way it is aimed for it to escape from Earth? (Neglect air resistance.) 3. Determine the elevation in kilometres above the surface of Uranus where the gravitational field strength has a magnitude of 1.0 N/kg. 4. Ganymede, one ...
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powerpoint version

... 4500 K to 6000 K. Visible as red flash during solar eclipse. Corona: starts about 2000 km from the solar surface, rapid temperature rise to 500,000 K then slower rise to well over one million K. Probably heated by electric currents due to changing magnetic fields. Total energy in corona is small des ...
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Early Observers (The Beginnings of Astronomy)

... Planets traveled in smaller circular paths as they traveled around the Earth (epicycles and deferents) Popular model of universe for 1,500 years. ...
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... STARS: A star is a huge, bright ball of burning gas that is held together by gravity. Stars contain mostly hydrogen as well as helium and smaller amounts of other elements. The Sun is the closest star to Earth. THE SUN: The Sun is a star and the biggest object in the Solar System, it burns brightly ...
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... (b) The diagram below shows the position of the Earth and the Sun when the astronomer made her observations. She noticed that Regulus was directly overhead at midnight. On the diagram, draw an arrow from the Earth to show the direction in which she looked to see ...
PHY 121 Astronomy
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... see any parallax on the stars. They started with the wrong premise that the stars are on a sphere which is not too large in its diameter and so the stars were assumed to be much closer than they actually are. Starting with this wrong assumption, they concluded that the appearance of the constellatio ...
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ASTRONOMY

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Today`s Powerpoint - Physics and Astronomy
Today`s Powerpoint - Physics and Astronomy

... Aristarchus: Used geometry of eclipses to show Sun bigger than Earth (and Moon smaller), so guessed that Earth orbits the Sun. Also guessed Earth spins on its axis once a day => apparent motion of stars. Aristotle: But there's no wind or parallax. ...
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... The apparent change in the direction of the remote object due to a change in the vantage point of the observer is called parallax. ...
Space Part1
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Perspectives of the Earth, Moon and Sun

... 3. Students know that our solar system consists of one star, eight planets and numerous other smaller objects. (10 mins) The view zooms into our solar system, showing the eight planets, the Sun and the asteroid belt in between the terrestrial planets and the gas giants. Students consider what the Ea ...
Our Solar System
Our Solar System

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Astronomical unit

The astronomical unit (symbol au, AU or ua) is a unit of length, roughly the distance from the Earth to the Sun. However, that distance varies as the Earth orbits the Sun, from a maximum (aphelion) to a minimum (perihelion) and back again once a year. Originally conceived as the average of Earth's aphelion and perihelion, it is now defined as exactly 7011149597870700000♠149597870700 meters (about 150 million kilometers, or 93 million miles). The astronomical unit is used primarily as a convenient yardstick for measuring distances within the Solar System or around other stars. However, it is also a fundamental component in the definition of another unit of astronomical length, the parsec.
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