Static Electricity Experiment Worksheet

Science experiments lesson 21: Static electricity: comb and paper bits · Set 631 · 40 questions

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.

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

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