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Centre of Mass
Centre of Mass

27-3
27-3

... Planets of the Solar System ...
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Quiz

... _____ 1. The moon’s surface is covered with a. craters. c. ice. b. oceans. d. an atmosphere. _____ 2. The solar system is held together by a. orbits. c. angular momentum. b. inertia. d. gravitational forces. _____ 3. When the moon is full, the ____________ is between the ____________ and the _______ ...
Ch. 17: The Solar System
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... small chunks of asteroids that travel in space  Meteor rock or metal that enters a planet’s atmosphere  Meteorite rock that hits a planet’s surface ...
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Chapter 6 The Solar System
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... also discover what the sun’s made of, as well as how it got its start way back at the beginning of our solar system’s history. And, you can find out what neat things go on near the sun’s surface, while getting pointers about how to protect yourself from the sun’s powerful rays. This movie is “solarl ...
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... Have the student work in pairs; talk about the planet distances and sizes compared to a scale model. The distances to the planets and the sizes of the planets are shown on the same scale, which is 1 inch = 12,000 miles. At this scale, Jupiter is 1,111 yards from the Sun and is represented by a socce ...
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1 a. List the plants from smallest to largest: Mercury, Mars, Venus

... Pluto   b)  Pluto  is  now  regarded  as  a  dwarf  planet  because  it  has  the  same   characteristics  of  a  plant,  that  is  having  enough  gravitational  pull  to  keeps  its   self  roughly  spherical.  The  difference  is ...
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Orrery



An orrery is a mechanical model of the solar system that illustrates or predicts the relative positions and motions of the planets and moons, usually according to the heliocentric model. It may also represent the relative sizes of these bodies; but since accurate scaling is often not practical due to the actual large ratio differences, a subdued approximation may be used instead. Though the Greeks had working planetaria, the first orrery that was a planetarium of the modern era was produced in 1704, and one was presented to Charles Boyle, 4th Earl of Orrery — whence came the name. They are typically driven by a clockwork mechanism with a globe representing the Sun at the centre, and with a planet at the end of each of the arms.
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