Big Idea 5-Earth and Space in Time

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Across
  1. 2. The phase of the moon at which the moon, as viewed from Earth, appears to have one - half illuminated by the sun due to the moon’s illumination decreasing
  2. 5. large, gaseous planets with multiple moons and ring systems
  3. 7. the path that an object takes in space when it goes around a star, a planet, or a moon
  4. 9. the name of our galaxy, which is the home of our solar system that includes the Earth and our star, the Sun.
  5. 13. the imaginary center line around which a planet or moon rotates
  6. 14. the lunar phase when the Moon appears fully illuminated from Earth's perspective
  7. 16. a primary moon phase when we can see exactly half of the moon's surface illuminated due to the moon’s illumination increasing
  8. 18. an object that is found in the solar system, revolves around (orbits) the Sun, and is much smaller than a planet
  9. 19. the study of objects in space and their properties
  10. 21. a frozen mass of ice, rock, dust, and gas that revolves around (orbits) the Sun
Down
  1. 1. small, rocky planets having few moons
  2. 3. the turning of an object such as a planet or moon on its axis
  3. 4. a huge system of stars, dust, and gas held together by gravity
  4. 6. a nearly round body slightly smaller than a planet whose orbit crosses the orbit of another body
  5. 8. one full orbit of one object around another object
  6. 10. the moon's phase when it is in conjunction with the sun so that its dark side is toward the earth
  7. 11. a large body in space that revolves around (orbits) a star and does not produce its own light
  8. 12. everything that exists, including galaxies and everything in them
  9. 15. a large object in space made of gas which produces its own light
  10. 17. a sun and all of the planets and other bodies that orbit it
  11. 20. a natural object that revolves around (orbits) a planet