science

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Across
  1. 2. tilt, The angle between the planet’s rotational axis and its orbital axis.
  2. 3. The natural satellite of the earth, visible (chiefly at night) by reflected light from the sun.
  3. 5. planets, Mercury, Venus, Earth, and Mars, all rocky planets.
  4. 8. The study of matter.
  5. 10. Moon, gets smaller.
  6. 12. The force between a planet and other objects.
  7. 17. field, The area around a magnet in which there is a magnetic force.
  8. 19. radiation, Radiant energy from the sun. system, Gravity bound system to sun and objects that orbit it.
  9. 20. A small, rocky object that orbits the sun.
  10. 22. Moon, gets larger.
  11. 24. The third rocky planet from the sun with 70% covered in water.
  12. 27. A bright streak of light that results when a meteoroid burns up in the Earth’s atmosphere.
  13. 28. The motion of a body that travels around another body in space; one complete trip along an orbit.
  14. 30. Anything that has mass and takes up space.
  15. 31. All space and time and their contents.
Down
  1. 1. A planet orbits a star, is rounded by gravity, and cleared its neighborhood.
  2. 4. The path that a body follows as it travels around another body in space.
  3. 6. The spin of a body on its axis.
  4. 7. An event in which the shadow of one celestial body falls on another.
  5. 9. A vehicle or machine designed to fly in outer space.
  6. 11. A thick layer of ice and snow that covers less than 50,000 km2
  7. 13. The star at the center of our solar system.
  8. 14. A mixture of gases that surround a planet or moon.
  9. 15. An orbital position with special climate conditions: spring, summer, fall, and winter.
  10. 16. planet, Gassy planets: Jupiter, Saturn, Uranus, or Neptune.
  11. 18. a small body of ice, rock, and cosmic dust with an elliptical orbit around the sun that forms a tail.
  12. 21. planet, A celestial body that orbits the sun has enough mass for a round shape has not cleared the neighborhood around its orbit and is not a moon.
  13. 23. An instrument that collects electromagnetic radiation from the sky and concentrates it for better observation.
  14. 25. The periodic rise and fall of the water level in the oceans.
  15. 26. phase, The lunar phase or Moon phase is the shape of the directly sunlit portion of the Moon as viewed from Earth
  16. 29. model, A physical representation of something too large or too small to see that has a size relationship.