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Astronomy - Chapter 1 - Scientific Notation and the Structure of the Universe

by: Lexie Kostreva

Astronomy - Chapter 1 - Scientific Notation and the Structure of the Universe Physics 226

Marketplace > University of Wisconsin - Eau Claire > Physics and Astronomy > Physics 226 > Astronomy Chapter 1 Scientific Notation and the Structure of the Universe
Lexie Kostreva
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About this Document

These notes cover the first week of material pertaining to the units used and structures of the universe.
Astronomy-Solar System
Nathan A. Miller
Class Notes
astronomy, solar system, universe, Galaxy, EARTH, moon, sun




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This 2 page Class Notes was uploaded by Lexie Kostreva on Friday September 16, 2016. The Class Notes belongs to Physics 226 at University of Wisconsin - Eau Claire taught by Nathan A. Miller in Fall 2016. Since its upload, it has received 39 views. For similar materials see Astronomy-Solar System in Physics and Astronomy at University of Wisconsin - Eau Claire.


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Date Created: 09/16/16
Scientific Notation and the Structure of the Universe  Scientific notation o A way of representing numbers that are very large or very small o Distance from the Earth to the Sun  150,000,000,000 m = 1.5 * 10^11 m o Diameter of an atom  0.0000000001 m = 1.0 * 10^-10 m = 0.1 nm o Calculation example  (2*10^3) * (3*10^5) = 6*10^8  Units o Metric system  Length  Meters (m)  Mass  Kilograms (kg)  Time  Seconds (s)  Temperature  Celsius/Kelvin (C/K)  Other units o Astronomical unit  Mean distance from the Earth to the Sun  1 AU = 1.496*10^11 m o Light year  Not a unit of time  Distance traveled by light in one year  1 ly = 9.46*10^15 m o Speed of light  299,792,458 m/s  3.0*10^8 m/s approximately  Scale of the universe 1 o Diameter of the Earth  12,756 km  Scale of the universe 2 o Distance from Earth to Moon  384,400 km  Scale of the universe 3 o Solar diagrams (not to scale) o Distance from Sun to Pluto  39.54 AU 9  5.916*10 km  Scale of the universe 4 o Distance from Earth to the next nearest star  4.24 light years  Scale of the universe 5 o Diameter of the Milky Way  100,000 light years  Scale of the universe 6 o Distance to the Great Galaxy in Andromeda  2.5 million light years  Scale of the universe 7 o Typical galaxy in Hubble Ultra Deep Field image  13 billion light years away


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