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Art Lesson Plan
Art Lesson Plan

...  Scissors  Glue  Pencils  Markers Introduction:  The teacher will begin by asking students what they already know about our solar system. (Ex. What is the planet we live on? How many planets are in our solar system?)  Introduce the eight planets of the solar system: Mercury, Venus, Earth, Mars ...
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... The early Universe contained only hydrogen, helium, and traces of lithium. All heavier elements were created in the core of stars as they “burned” the hydrogen and helium into carbon, oxygen, neon, calcium, magnesium, silicon, and iron These were then expelled into space by - stellar winds (happenin ...
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... Now move ahead in time until the alignment repeats itself. Record this date also. Next Alignment date __________________ Enter these dates in a spreadsheet and subtract them to find your observed synodic period _______________ Repeat the observations for each of the planets out to Saturn. Check your ...
The Synodic and Orbit Periods of the Planets
The Synodic and Orbit Periods of the Planets

... Now move ahead in time until the alignment repeats itself. Record this date also. Next Alignment date __________________ Enter these dates in a spreadsheet and subtract them to find your observed synodic period _______________ Repeat the observations for each of the planets out to Saturn. Check your ...
PH109 Exploring the Universe, Test #2 Fall 04
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... newly forming star that was much hotter than the protoSun. What would we expect about its planets? A. The planets orbit at random angles around the star. B. Rocky planets might be formed over a wider range of distances than in our Solar System. C. The star would be “naked,” without a surrounding dis ...
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... • Discovered by mathematics (anomaly in orbit of Uranus) in 1845-46. • Can be seen in binoculars (looks like a faint star) • About the same size as Uranus, but 60% farther away • Voyager 2 discovered a cool blue spot, which has since disappeared • Largest moon, Triton ...
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... 9. What planet(s) in our solar system are terrestrial? Mercury, Venus, Earth and Mars are the four planets closest to the Sun. They are also known as the inner planets and are composed mainly of rocky material and metals. The outer planets are Jupiter, Saturn, Uranus and Neptune and are also known a ...
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New Earthlike Planet Discovered

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... 35. Which of the following describes the Doppler Method of detecting planets? (a) looking for reduced light as a planet passes between us and the star. (b) looking for the change in position of a star on the sky (c) looking at the change in velocity of a star from its spectra (d) looking at locatio ...
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Definition of planet



The definition of planet, since the word was coined by the ancient Greeks, has included within its scope a wide range of celestial bodies. Greek astronomers employed the term asteres planetai (ἀστέρες πλανῆται), ""wandering stars"", for star-like objects which apparently moved over the sky. Over the millennia, the term has included a variety of different objects, from the Sun and the Moon to satellites and asteroids.By the end of the 19th century the word planet, though it had yet to be defined, had become a working term applied only to a small set of objects in the Solar System. After 1992, however, astronomers began to discover many additional objects beyond the orbit of Neptune, as well as hundreds of objects orbiting other stars. These discoveries not only increased the number of potential planets, but also expanded their variety and peculiarity. Some were nearly large enough to be stars, while others were smaller than Earth's moon. These discoveries challenged long-perceived notions of what a planet could be.The issue of a clear definition for planet came to a head in 2005 with the discovery of the trans-Neptunian object Eris, a body more massive than the smallest then-accepted planet, Pluto. In its 2006 response, the International Astronomical Union (IAU), recognised by astronomers as the world body responsible for resolving issues of nomenclature, released its decision on the matter. This definition, which applies only to the Solar System, states that a planet is a body that orbits the Sun, is massive enough for its own gravity to make it round, and has ""cleared its neighbourhood"" of smaller objects around its orbit. Under this new definition, Pluto and the other trans-Neptunian objects do not qualify as planets. The IAU's decision has not resolved all controversies, and while many scientists have accepted the definition, some in the astronomical community have rejected it outright.
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