PHYSICS

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Across
  1. 1. greek word for "natural"
  2. 3. equality of ratios
  3. 7. study of the relationship between heat and other forms of energy
  4. 10. a change in position with respect to a particular reference frame within a time interval
  5. 11. width of a person's thumb
  6. 12. physics is unthinkable without this
  7. 13. quantity which has magnitude only
  8. 15. process of comparing one quantity with another quantity
  9. 16. a systematized body of knowledge
  10. 17. ancient people use this as the standard unit of measurement
  11. 19. the basic unit of length
  12. 20. a scalar quantity that refers to "how much ground an object has covered" during its motion
Down
  1. 2. application of a logical process of reasoning
  2. 4. a tentative explanation for an observation, phenomenon, or scientific problem that can be tested by further investigation
  3. 5. considered a basic science
  4. 6. sum of two or more vectors
  5. 8. gives an accuracy of fractions of millimeter
  6. 9. he once said:Imagination is more important than knowledge."
  7. 14. quantity which can be represented by an arrow
  8. 15. a branch of physics that is concerned with the analysis of the action of forces on matter or material systems
  9. 18. a scalar quantity that refers to "how fast an object is moving"