Earth and Universe

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Across
  1. 3. Represents the Earth in a way that is physically accurate because it is round
  2. 5. The space outside of Earth, has 5 layers
  3. 8. the Earth's only natural satellite, rotation and revolution lasts 28 days
  4. 12. Imaginary line that connects the North and South Pole
  5. 14. Middle layer of the Earth, very hot and creates magma
  6. 15. A big star in the center of the solar system
  7. 17. Imaginary line that dives Earth into the North and South Hemisphere
  8. 19. Four closest planets to the sun, made with rocks and metal
Down
  1. 1. All the layers of water on Earth, has three different states
  2. 2. Earth orbits around the sun and takes one year to do this
  3. 4. Four furthest planets to the sun, made with gas
  4. 6. Earth spins on its axis and takes 24 hours (day and night) to do this
  5. 7. Sphere in the middle of the Earth
  6. 9. The planet we live in
  7. 10. Earth's outermost layer, made with tectonic plates
  8. 11. Eight planets orbiting around the sun in space
  9. 13. Represents Earth on a flat surface
  10. 16. all the layers of rock and mineral inside the Earth
  11. 18. Millions of stars forming part of the galaxy