energy

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Across
  1. 3. = A - is an electricity generation center
  2. 5. = a - is actuclined plane wrapped around a cylinder
  3. 6. = an - is a flat surface with one end higher than the other
  4. 7. = while pulling or pushing we apply - on it
  5. 9. =is an ablity to do work
Down
  1. 1. = this is the point in a lever that does not move
  2. 2. = the energy drived from water is called
  3. 4. =is the ultimate source of energy on earth
  4. 5. = the energy derived from the sun,s rays that that reach the earth is called
  5. 8. = the - is one of the oldest machines used by human race