santa's Electro

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Across
  1. 4. atom / contains one proton in its nucleus. This is balanced by one orbiting electron.
  2. 6. current /periodically reverses direction.
  3. 7. current / moves in one direction.
  4. 8. /be defined as a path for current flow and has three key characteristics .
  5. 9. /smallest particle of electric charge having the characteristic called positive polarity.
  6. 10. current / considered as the motion of positive charges.
Down
  1. 1. /are materials that are neither good conductors nor good insulators.
  2. 2. number /of an element is the number of protons in the nucleus of the atom .
  3. 3. / smallest particle of electricity .
  4. 5. valence /an atom is the number of electrons in an incomplete outermost shell.