Beautiful Vocabulary

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Across
  1. 3. The quantity of something per unit volume,unit area, or unit length.
  2. 6. The rate of change of velocity.
  3. 8. Different phases of the moon.
  4. 9. The force by which a planet or other body draws objects toward its center.
  5. 10. Consists of all the food chains in a single ecosystem.
  6. 11. Shines heat to everyone, and makes plants grow.
  7. 12. The rate of change of position of an object in any direction.
Down
  1. 1. The circular motion of an object around its center.
  2. 2. Graph of stars are plotted against their spectral types.
  3. 4. The resurrection of modern day science.
  4. 5. Dryness,heat,sunshine,wind and rain.
  5. 7. All the forces that act upon an object.