Science recap

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Across
  1. 4. what is the start of the digestive system near the mouth?
  2. 6. what shape does a circuit sound like?
  3. 8. what makes lights go on?
Down
  1. 1. light is a form of energy made of this
  2. 2. what do we need to have nutrition?
  3. 3. Our sense involving our ears
  4. 5. what does the m in mrs Gren stand for?
  5. 7. what does the e in mrs Gren stand for?
  6. 9. is plastic transparent?