Physical Science

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Across
  1. 5. The rate at which velocity changes
  2. 7. organized way of gathering and analyzing evidence about the natural world
  3. 9. The length of a path between two points
  4. 10. The product of an object's mass and velocity
  5. 12. A change from one form of energy to another
  6. 13. The distance an object travels per unit of time
  7. 14. The length of a path between two points
  8. 19. A force of attraction between objects that is due to their masses.
  9. 20. The percentage of the input work that is converted to output work
  10. 22. energy of motion
  11. 25. factor in an experiment that a scientist wants to observe, which may change in response to the manipulated variable; also known as a dependent variable
  12. 28. The study of the properties of matter and how matter changes
  13. 29. the number of times a machine increases a force exerted on it
  14. 31. stored energy
  15. 32. method A series of steps followed to solve problems including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions.
  16. 33. a source of energy that can be replaced in a relatively short period of time
Down
  1. 1. the speed of an object in a particular direction
  2. 2. A force that opposes motion between two surfaces that are in contact
  3. 3. The study of matter and energy and the interactions between the two through forces and motion.
  4. 4. a system of objects that are not moving with respect to one another
  5. 6. The ability to do work
  6. 8. a machine made of more than one simple machine
  7. 11. coal, oil, natural gas
  8. 15. The combination of all forces acting on an object
  9. 16. finding ways to use less energy or to use energy more efficiently
  10. 17. A measure of the force of gravity on an object
  11. 18. variable factor in an experiment that a scientist purposely changes; also known as the independent variable
  12. 21. Knowledge that people use to make a way of life in their surroundings
  13. 23. The tendency of an object to resist a change in motion
  14. 24. the amount of matter in an object
  15. 26. A force that opposes motion between two surfaces that are in contact
  16. 27. A device that makes work easier
  17. 30. the rate at which work is done
  18. 34. Force exerted on an object that causes it to move