Earth Science Chapter 16

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Across
  1. 2. A star is located in position ‘A’ in the diagram. What kind of star is it? (2 words no space)
  2. 3. A supernova can produce this
  3. 5. What do we call the diagram shown below (2 words no space)
  4. 9. The average magnitude of a star as it is measured from earth (2 words no space)
  5. 10. A star has an absolute magnitude of 4.5. If its apparent magnitude is 6.7, it is more than 10________ away from the Earth.
  6. 11. Charged particles produced by the sun protect the _________ from the rest of the galaxy’s radiation
  7. 15. Time passes faster or slower in satellites that orbit the Earth than it does on the surface of the Earth.
  8. 16. a visible stellar object whose absolute magnitude can be determined without knowing the distance to it. (2 words no space)
  9. 18. a system of many stars held together by gravity
  10. 19. The time over which a Cepheid variable’s brightness changes can be used to determine the star’s __________ magnitude. That allows us to determine the distance to the star when parallax is no longer able to measure the star’s distance from earth.
  11. 20. Mercury, Venus, Earth and Mars are referred to as the ________ planets
Down
  1. 1. Which is a clearer view? A telescope that is on the surface of the Earth or one that is orbiting the Earth. Answer will either be thesurface or isorbiting.
  2. 4. The cluster to which the Milky Way belongs. (2 words no space)
  3. 6. The phenomenon where light coming from stars has longer wavelengths than it should have.
  4. 7. The distance light would travel in a year, based on how it behaves on the earth
  5. 8. The average distance between the earth and the sun (150 million kilometers) 1 AU = 150,000,000 km (2 words no space)
  6. 12. The sun’s _______ overwhelms the ______ from the stars, even on the moon. (one word is the answer for both blanks)
  7. 13. The effect by which the position of an object appears to change when viewed from different locations
  8. 14. Star ‘C’ would be brighter than star ‘B’ when viewed at a distance of 10 parsecs because the absolute magnitude is higher or lower than star ‘B’
  9. 16. When using parallax to determine the distance to a star, astronomers typically make one observation of the star and then a second one ______ months later
  10. 17. A binary star system contains one star and its __________ star.