Science

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Across
  1. 2. the magnetic field become ..?.. when you are coming closer
  2. 5. water resistance and air resistance are types of ..?..
  3. 7. what are the units for pressure?
  4. 8. what is made from the elements hydrogen and oxygen
  5. 9. the magnetic field has a ..?..
  6. 10. they are spread out the weight of the train
  7. 13. ..?.. field is the space around magnet
  8. 14. the magnetic matereal
  9. 16. the original system measured the purity of gold objects in ..?..
  10. 19. the pole which will attract the south pole
Down
  1. 1. it was using by sailors to work out the direction
  2. 2. hydrogen sulphate is the ..?.. acid
  3. 3. the magnet made by using the electrocity
  4. 4. it can attract iron
  5. 6. the name of the mixtures of metals
  6. 11. what was the name of the first locomotive which was using the multi-tube boiler
  7. 12. hydrogen nitrate is the ..?.. acid
  8. 15. for the large area,the pressure will be ..?..
  9. 17. the mixture that is mostly iron
  10. 18. the pole which will repel the south pole
  11. 20. for a large force,the pressure will be ..?..