Physical science

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Across
  1. 1. the change in direction of a wave passing from one medium to another caused by its change in speed
  2. 3. the interval of time required for one-half of the atomic nuclei of a radioactive sample to decay
  3. 5. the act or process of liquefying or rendering plastic by heat
  4. 8. in referring to matter that is not solid
  5. 9. a measure of the amount of matter in an object
  6. 11. the support force exerted upon an object that is in contact with another stable object
  7. 13. a state of matter that has no fixed shape and no fixed volume
  8. 17. two forces acting on an object are not equal in size
  9. 18. the basic unit of a chemical element.
  10. 19. one of the three main states of matter, along with liquid and gas
  11. 21. when a neutron slams into a larger atom
  12. 24. the study of a state of matter comprising charged particles
  13. 29. a form of energy that results from the flow of charged particles
  14. 31. processing thoughts and feelings about an incident
  15. 33. a thing that is composed of two or more separate elements; a mixture.
  16. 34. the quality of being hot; high temperature.
  17. 36. a positive charge equal in magnitude to a unit of electron charge
  18. 37. any material capable of attracting iron and producing a magnetic field outside itself
  19. 38. a subatomic particle of about the same mass as a proton but without an electric charge
  20. 40. any atom or group of atoms that bears one or more positive or negative electrical charges
  21. 42. a wheel that carries a flexible rope, cord, cable, chain, or belt on its rim
  22. 43. a scalar quantity that refers to "how much ground an object has covered
  23. 45. the process of light bending around an obstacle or spreading out after it moves through a small space
  24. 46. relating to, or utilizing a shift in frequency
  25. 49. an electromotive force or potential difference expressed in volts.
  26. 50. a mechanical device consisting of a grooved wheel turned by a cord or chain with a rigidly attached axle
  27. 52. the controlled use of nuclear energy
Down
  1. 2. one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table
  2. 4. the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position.
  3. 6. Tow forces equal in size
  4. 7. energy that comes from a source and travels through space at the speed of light.
  5. 10. an occupation or something that someone does or has done
  6. 12. branches so that the current divides and only part of it flows through any branch
  7. 14. property of a body by virtue of which it opposes any agency that attempts to put it in motion
  8. 15. disturbance or variation that transfers energy progressively from point to point in a medium
  9. 16. units of distance divided by time
  10. 20. the transfer of heat by the movement of a fluid (liquid or gas) between areas of different temperature.
  11. 22. he transfer of heat between two parts of a stationary system, caused by a temperature difference between the parts
  12. 23. how fast an object is moving
  13. 25. solid, liquid, and gas are
  14. 26. the flow of electrical charge carriers like electrons.
  15. 27. a measure of the heaviness of an object
  16. 28. strength or energy exerted or brought to bear
  17. 30. formed when two or more other substances act upon one another
  18. 32. motion remains in uniform motion in a straight line u
  19. 35. comprises a path along which the whole current flows through each component
  20. 39. equal to one event per second
  21. 41. a bar used to pry or move something
  22. 44. is a mechanical device that changes the direction or magnitude of a force
  23. 47. a stable subatomic particle with a charge of negative electricity
  24. 48. any substance composed of identical molecules consisting of atoms of two or more chemical elements
  25. 51. the capacity for doing work