Astronomy Homework

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Across
  1. 3. A small piece of rock orbiting the sun
  2. 5. Ice, dust and rock which orbit the sun. When they get close they melt and have a tail.
  3. 7. Pluto is a _____ planet
  4. 11. A cloud of gas and dust which will become a star
  5. 13. The terrestrial planets are Mercury, Venus, Earth and _____
  6. 15. When the high tides are higher and the low tides are lower
  7. 18. A small asteroid
  8. 20. The shadow of the Earth stops light from reaching the moon during a _____ eclipse
  9. 21. It takes the Earth ____ hours to rotate
  10. 23. Using stars to predict people's everyday life (like a horoscope). It's not very scientific!
  11. 24. It takes the Earth one ____ to orbit the sun
Down
  1. 1. The first planet
  2. 2. Between the quarter and full moons
  3. 4. When the moon travels in front of the sun, blocking all light
  4. 6. A meteroid that has hit the Earth's surface
  5. 8. When the moon is getting smaller
  6. 9. When the moon is getting bigger
  7. 10. When the high tides are smaller and the low tides are higher
  8. 12. A meteoroid that has hit the Earth's atmosphere
  9. 14. What season is it in Australia if we are tilted towards the sun?
  10. 16. The study of space
  11. 17. When a big star explodes, it is called a _______
  12. 19. Spring tides happen during the new and the ____ moon
  13. 22. The sun sets in the _____