Science crossword

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Across
  1. 4. Hunts prey
  2. 6. organs of the breathing system
  3. 7. the force that happens when two surfaces rub against each other
  4. 8. What does a scientist look like?
Down
  1. 1. What piece of equipment do we use to heat things in the lab? (2 words, no space)
  2. 2. How many lessons of science do you have a week?
  3. 3. What is the science department skeleton called?
  4. 5. Who is the physics lab named after? (2 words, no space)