How Aurora Phenomena Happen

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Across
  1. 1. a particle consisting of neutrons and protons and surrounded by electrons
  2. 5. A very small piece of matter
  3. 6. The outer atmosphere of the sun is filled with streams of charged plasma particles that radiate in all directions
  4. 8. A celestial body that revolves around the sun with a certain trajectory and speed
  5. 11. particles with a negative charge
  6. 13. The third planet from the sun and the only planet that's inhabited by living things
  7. 14. an imaginary line used to determine a location on Earth centered on the equator
  8. 17. end of the axis of the earth
  9. 18. the largest planet in the solar system
  10. 19. a line that separates the earth from the sky
Down
  1. 2. space or area around the magnet that is still affected by the magnetic force
  2. 3. the energy possessed by an object because of the motion it does or experiences
  3. 4. the second-smallest planet in the solar system and the fourth planet from the sun
  4. 7. a layer of gas that envelops planets, including the earth
  5. 9. the distance above sea level
  6. 10. second largest planet in the solar system and the sixth planet from the sun
  7. 12. a form of energy that can be carried by wires and is used for heating, lighting, and to provide power for machines
  8. 15. A colorful light in the sky of the earth's poles
  9. 16. the long-term weather pattern in an area
  10. 17. particles with a positive charge