What is Physics?

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Across
  1. 5. measured in meters and is shortest path between A and B on a map
  2. 7. ____ is represented by an arrow in physics
  3. 8. _____ physics is used for study of physics at the size of atoms and smaller
  4. 9. a vector quantity needs both magnitude and ___
  5. 12. measured in meters per second and doesn't matter in which direction
  6. 13. the science of the study of matter and energy
  7. 15. the study of heat and its effects
  8. 16. Study of electricity & magnetism and how they
Down
  1. 1. measured in meters per second and must have direction given
  2. 2. how fast the speed of an object increases
  3. 3. total path taken during a trip (not the shortest)
  4. 4. word that means Amount in physics
  5. 6. the study of lenses and its action on light
  6. 10. Einstein's Theory of time and space called _____ was revolutionary
  7. 11. the study of motion, velocity and acceleration
  8. 14. How packed a material is