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Static Electricity Experiment Worksheet

Science experiments lesson 21: Static electricity: comb and paper bits · Set 917 · 40 questions
TalentJR

What you do (Rub and charge): 1. Tear a sheet of paper into tiny bits on a table. 2. Comb dry, clean hair quickly 10 times. 3. Hold the comb just above the paper bits and watch. 4. Try again with 20 combs, and count the bits each time.

NameDateTime takenScore ___ / 40
  1. 1.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: number of rubs is kept the same. (a) True (b) False
  2. 2.🔮 Predict: you rub a balloon on dry hair and hold it on a wall. What happens? (a) it bursts at once (b) it turns into water (c) it sticks for a while (d) it falls straight down
  3. 3.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? Which of these is the one thing we change? (a) number of rubs (b) the same hair (c) paper bits picked up (d) the same comb
  4. 4.True or false: tiny paper bits is not needed for the static comb. (a) False (b) True
  5. 5.True or false: tiny paper bits does not move to a charged comb. (a) False (b) True
  6. 6.🔮 Predict: a charged comb is held near a thin stream of tap water. What happens? (a) the water freezes (b) the stream bends (c) the water stops (d) nothing at all
  7. 7.⚡ A rubbed comb is held near a thin water stream. What happens? (a) does not move (b) jumps to the comb
  8. 8.True or false: dry hair does not move to a charged comb. (a) False (b) True
  9. 9.True or false: a pebble does not move to a charged comb. (a) False (b) True
  10. 10.⚡ Which big natural spark is caused by static electricity? (a) the wind (b) lightning (c) a rainbow (d) dew
  11. 11.True or false: a steel spoon jumps to a charged comb. (a) False (b) True
  12. 12.🧺 Do we need dry hair for the static comb? (a) needed (b) not needed
  13. 13.⚡ Which of these jumps to a charged comb? (a) a brick (b) a pebble (c) a steel spoon (d) a thin water stream
  14. 14.⚡ Why does the rubbed comb pull the paper bits? (a) it is a magnet (b) it is hot (c) it has static charge (d) it is sticky
  15. 15.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “number of rubs”? (a) we keep it the same (b) we change it (c) we measure it
  16. 16.🧺 Which of these is not needed for the static comb? (a) a mirror (b) tiny paper bits (c) a plastic comb (d) dry hair
  17. 17.True or false: dry hair is not needed for the static comb. (a) True (b) False
  18. 18.🧺 Which of these is needed for the static comb? (a) yeast (b) vinegar (c) a plastic comb (d) turmeric powder
  19. 19.True or false: a magnet is needed for the static comb. (a) True (b) False
  20. 20.True or false: a battery cell is needed for the static comb. (a) True (b) False
  21. 21.🧺 Do we need a battery cell for the static comb? (a) not needed (b) needed
  22. 22.True or false: a mirror is needed for the static comb. (a) True (b) False
  23. 23.⚡ Which of these jumps to a charged comb? (a) a brick (b) a pebble (c) a steel spoon (d) tiny paper bits
  24. 24.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: the same comb is what we measure. (a) False (b) True
  25. 25.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: the same comb is kept the same. (a) True (b) False
  26. 26.🧺 Do we need a balloon for the static comb? (a) not needed (b) needed
  27. 27.🧺 Do we need a magnet for the static comb? (a) needed (b) not needed
  28. 28.🛟 There is lightning outside. Where is it safest to be? (a) in an open field (b) under a tall tree (c) indoors (d) on a rooftop
  29. 29.⚡ A rubbed comb is held near a brick. What happens? (a) jumps to the comb (b) does not move
  30. 30.🧺 Do we need a mirror for the static comb? (a) needed (b) not needed
  31. 31.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: the same hair is kept the same. (a) False (b) True
  32. 32.⚡ Why does the comb trick work best on a dry day? (a) damp air leaks charge (b) dry days are noisy (c) wet hair is magnetic (d) water adds charge
  33. 33.🧺 Do we need vinegar for the static comb? (a) needed (b) not needed
  34. 34.🛟 Static from a comb is safe. Which electricity must children never play with? (a) paper bits on a comb (b) a rubbed plastic comb (c) plug points at home (d) a rubbed balloon
  35. 35.🧺 Which of these is needed for the static comb? (a) turmeric powder (b) yeast (c) a balloon (d) vinegar
  36. 36.🔮 Predict: you wet the comb before trying again. What happens? (a) it becomes a magnet (b) it works better (c) it hardly works (d) it lights up
  37. 37.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: the paper bit size is the one thing we change. (a) False (b) True
  38. 38.True or false: a brick jumps to a charged comb. (a) True (b) False
  39. 39.🔍 Which is the odd one out? (a) dry hair (b) tiny paper bits (c) a heavy book (d) thermocol bits
  40. 40.🔍 Which is the odd one out? (a) a thin water stream (b) dry hair (c) a brick (d) tiny paper bits

Answer key

  1. False
  2. it sticks for a while
  3. number of rubs
  4. False
  5. False
  6. the stream bends
  7. jumps to the comb
  8. False
  9. True
  10. lightning
  11. False
  12. needed
  13. a thin water stream
  14. it has static charge
  15. we change it
  16. a mirror
  17. False
  18. a plastic comb
  19. False
  20. False
  21. not needed
  22. False
  23. tiny paper bits
  24. False
  25. True
  26. needed
  27. not needed
  28. indoors
  29. does not move
  30. not needed
  31. True
  32. damp air leaks charge
  33. not needed
  34. plug points at home
  35. a balloon
  36. it hardly works
  37. False
  38. False
  39. a heavy book
  40. a brick

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