Chinese Science

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Across
  1. 5. type of iron ore that aligns itself north-south
  2. 7. instrument that determines direction
Down
  1. 1. occurs when the moon blocks our view of the sun
  2. 2. Shines because it reflects the light of the sun
  3. 3. Broom stars were called these
  4. 4. Chinese astronomers closely observed this
  5. 6. instrument that detects earthquakes