Static Electricity Experiment Worksheet

Science experiments lesson 21: Static electricity: comb and paper bits · Set 241 · 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.⚖️ 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) distance to the paper (c) number of rubs (d) the paper bit size
2. 2.🧺 Which of these is not needed for the static comb? (a) tiny paper bits (b) turmeric powder (c) a balloon (d) a plastic comb
3. 3.🔮 Predict: you rub a balloon on dry hair and hold it on a wall. What happens? (a) it turns into water (b) it falls straight down (c) it bursts at once (d) it sticks for a while
4. 4.True or false: dry hair does not move to a charged comb. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) a steel spoon (b) puffed rice (c) tiny paper bits (d) dry hair
6. 6.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: the paper bit size is kept the same. (a) False (b) True
7. 7.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “number of rubs”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.True or false: yeast is not needed for the static comb. (a) False (b) True
9. 9.🧺 Which of these is not needed for the static comb? (a) dry hair (b) a plastic comb (c) yeast (d) a balloon
10. 10.⚡ You comb dry hair and hold the comb near tiny paper bits. What happens? (a) nothing happens (b) the bits jump to it (c) they turn blue (d) they turn wet
11. 11.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) tiny paper bits (b) dry hair (c) a plastic comb (d) a magnet
12. 12.True or false: a heavy book jumps to a charged comb. (a) False (b) True
13. 13.🧺 Do we need yeast for the static comb? (a) needed (b) not needed
14. 14.🧺 Which of these is not needed for the static comb? (a) dry hair (b) a plastic comb (c) tiny paper bits (d) a mirror
15. 15.🔍 Which is the odd one out? (a) dry hair (b) a brick (c) a steel spoon (d) a pebble
16. 16.⚡ A rubbed comb is held near a heavy book. What happens? (a) jumps to the comb (b) does not move
17. 17.⚡ Which of these jumps to a charged comb? (a) dry hair (b) a steel spoon (c) a heavy book (d) a pebble
18. 18.🔮 Predict: a charged comb is held near a thin stream of tap water. What happens? (a) the water stops (b) the stream bends (c) the water freezes (d) nothing at all
19. 19.🧺 Do we need dry hair for the static comb? (a) needed (b) not needed
20. 20.🔍 Which is the odd one out? (a) a heavy book (b) dry hair (c) puffed rice (d) a thin water stream
21. 21.True or false: thermocol bits does not move to a charged comb. (a) True (b) False
22. 22.⚡ A rubbed comb is held near a thin water stream. What happens? (a) does not move (b) jumps to the comb
23. 23.⚖️ 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
24. 24.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “the paper bit size”? (a) we keep it the same (b) we change it (c) we measure it
25. 25.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “paper bits picked up”? (a) we keep it the same (b) we change it (c) we measure it
26. 26.🛟 There is lightning outside. Where is it safest to be? (a) under a tall tree (b) indoors (c) in an open field (d) on a rooftop
27. 27.🔍 Which is the odd one out? (a) thermocol bits (b) a pebble (c) dry hair (d) puffed rice
28. 28.True or false: tiny paper bits jumps to a charged comb. (a) True (b) False
29. 29.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: the same hair is kept the same. (a) True (b) False
30. 30.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) a plastic comb (b) a balloon (c) dry hair (d) a battery cell
31. 31.True or false: a steel spoon does not move to a charged comb. (a) True (b) False
32. 32.🧺 Which of these is needed for the static comb? (a) yeast (b) vinegar (c) dry hair (d) a mirror
33. 33.True or false: a magnet is needed for the static comb. (a) True (b) False
34. 34.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) a plastic comb (b) a mirror (c) dry hair (d) tiny paper bits
35. 35.⚡ 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
36. 36.🧺 Which of these is needed for the static comb? (a) vinegar (b) a battery cell (c) turmeric powder (d) a plastic comb
37. 37.🔮 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
38. 38.True or false: a steel spoon jumps to a charged comb. (a) True (b) False
39. 39.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? Which of these is the one thing we change? (a) the paper bit size (b) number of rubs (c) paper bits picked up (d) the same hair
40. 40.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “distance to the paper”? (a) we keep it the same (b) we change it (c) we measure it

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