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Transcript
Solar System and Astronomy 001 Across Name: __________________________________ Class: _____________ Date: 2. 5. 6. 8. 9. 3rd rock from the sun the distance that light travels in a vacuum in one Julian year the four currently accepted dwarf planets beyond Neptune's orbit nuclear reaction at core of star a star system consisting of two stars orbiting around their common center of mass 10. natural satellite 12. a massive, gravitationally bound system consisting of stars, stellar remnants, an interstellar medium of gas and dust 13. growth of a massive object by gravitationally attracting more matter Down 1. a region of the solar system beyond the planets extending from the orbit of Neptune (at 30 AU) to approximately 50 AU from the Sun 3. a natural science that deals with the study of celestial objects 4. patterns formed by prominent stars within apparent proximity to one another 7. the galaxy that contains the Earth 11. lost its status as a planet in 2006 when it was reclassified as a dwarf planet 14. interstellar cloud of dust, hydrogen, helium and other ionized gases _____________ Solar System and Astronomy 001 Answer-Key Across 2. 3rd rock from the sun Answewr: earth 5. the distance that light travels in a vacuum in one Julian year Answewr: light-year 6. the four currently accepted dwarf planets beyond Neptune's orbit Answewr: Plutoids 8. nuclear reaction at core of star Answewr: fusion 9. a star system consisting of two stars orbiting around their common center of mass Answewr: binary-star 10. natural satellite Answewr: moon 12. a massive, gravitationally bound system consisting of stars, stellar remnants, an interstellar medium of gas and dust Answewr: galaxy 13. growth of a massive object by gravitationally attracting more matter Answewr: accretion Down 1. a region of the solar system beyond the planets extending from the orbit of Neptune (at 30 AU) to approximately 50 AU from the Sun Answewr: Kuiper-belt 3. a natural science that deals with the study of celestial objects Answewr: Astronomy 4. patterns formed by prominent stars within apparent proximity to one another Answewr: constellation 7. the galaxy that contains the Earth Answewr: Milky-Way 11. lost its status as a planet in 2006 when it was reclassified as a dwarf planet Answewr: Pluto 14. interstellar cloud of dust, hydrogen, helium and other ionized gases Answewr: nebula
