Introduction.Arny

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20 Scientific Notation : Powers of Ten 1 Astronomical Unit = 93,000,000 miles = 9.3 X 10 7 miles 1 A.U. = 1.5 X 10 8 km 1 Light Year = 9.461 X 10 12 km = 5.88 X 10 12 miles Diameter of atom = 0.0000000001 m = 1 X 10 -10 m
21 Metric System SI: meters (m), kilograms (kg), seconds (s) English: foot, pound, second 1 mile = 1.6 km 1 pound = 0.454 kg

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22 Temperature Scales ( 29 o o o o o o o o o o o o F C C F F C K K C F K C F 32 9 5 32 5 9 459 273 0 373 100 212 273 0 32 0 - = + = - = - = = = = =
23 What Astronomy 1504 is NOT! A . It’s NOT a course in star or constellation identification. B. It’s NOT a course in astrology , a pseudo- science.

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Some Important Assumptions of Science: 1. The Universe exists. 2. We can accurately observe and measure objects and events within the Universe. 3. We assume that natural events and objects are caused by natural forces and processes. 4. These processes can be determined by
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## This note was uploaded on 04/17/2008 for the course ASTRO 1504 taught by Professor Tabak during the Spring '08 term at Youngstown State University.

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