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This study guide explores key concepts about stars and galaxies, including why stars appear to move across the sky due to Earth's rotation and revolution. It features in-depth descriptions of Polaris, the multiple star system shining brightly in Ursa Minor, and explains the electromagnetic spectrum's components—from radio waves to gamma rays. Dive into how stars produce energy through nuclear fusion by transforming hydrogen into helium, and learn about our Sun as a main-sequence star, poised to become a white dwarf in 5 billion years.
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Stars and Galaxies Study Guide 2011 By: Gracelyn Thrash and Emily Burns
25 Why do the stars seem to move across THE sky? • Earth is rotating • Earth is revolving around the Sun
26 Describe Polaris. • 434 light years away from Earth • A multiple star • the brightest star in the constellation Ursa Minor
1 What waves make up the electromagnetic spectrum? • Red= long • Blue= short • Radio waves, microwaves, infrared light, ultra violet light, x-rays, and gamma rays are invisible
2 How do stars produce energy? • By nuclear fusion- • The process of turning hydrogen into helium
3 What type of star is our Sun? • A Main-sequence star
4 What will the sun become in 5 billion years? • A white dwarf
