Static Electricity Experiment Worksheet

Science experiments lesson 21: Static electricity: comb and paper bits · Set 770 · 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? What do we do with “the paper bit size”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.⚡ Which of these jumps to a charged comb? (a) tiny paper bits (b) a heavy book (c) a pebble (d) a brick
3. 3.🧺 Which of these is not needed for the static comb? (a) a balloon (b) tiny paper bits (c) a plastic comb (d) a mirror
4. 4.True or false: a pebble jumps to a charged comb. (a) True (b) False
5. 5.🔮 Predict: a charged comb is held near a thin stream of tap water. What happens? (a) the stream bends (b) nothing at all (c) the water freezes (d) the water stops
6. 6.⚡ Which of these does not move to a charged comb? (a) thermocol bits (b) puffed rice (c) a heavy book (d) tiny paper bits
7. 7.⚡ Why does the rubbed comb pull the paper bits? (a) it is sticky (b) it is hot (c) it has static charge (d) it is a magnet
8. 8.🧺 Do we need vinegar for the static comb? (a) needed (b) not needed
9. 9.⚡ Which of these jumps to a charged comb? (a) a heavy book (b) a steel spoon (c) puffed rice (d) a brick
10. 10.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? Which of these is kept the same? (a) distance to the paper (b) number of rubs (c) paper bits picked up
11. 11.🔍 Which is the odd one out? (a) dry hair (b) tiny paper bits (c) a steel spoon (d) puffed rice
12. 12.⚡ Which of these jumps to a charged comb? (a) a steel spoon (b) a brick (c) dry hair (d) a pebble
13. 13.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) dry hair (b) tiny paper bits (c) yeast (d) a plastic comb
14. 14.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “the same hair”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “distance to the paper”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.True or false: a balloon is not needed for the static comb. (a) True (b) False
17. 17.🧺 Do we need a balloon for the static comb? (a) needed (b) not needed
18. 18.🔮 Predict: you wet the comb before trying again. What happens? (a) it hardly works (b) it becomes a magnet (c) it works better (d) it lights up
19. 19.⚡ Which of these does not move to a charged comb? (a) dry hair (b) tiny paper bits (c) puffed rice (d) a steel spoon
20. 20.🛟 There is lightning outside. Where is it safest to be? (a) indoors (b) under a tall tree (c) in an open field (d) on a rooftop
21. 21.⚡ You comb dry hair and hold the comb near tiny paper bits. What happens? (a) they turn blue (b) the bits jump to it (c) nothing happens (d) they turn wet
22. 22.⚡ Which of these jumps to a charged comb? (a) a pebble (b) a heavy book (c) a brick (d) a thin water stream
23. 23.🧺 Which of these is needed for the static comb? (a) a mirror (b) a magnet (c) turmeric powder (d) a plastic comb
24. 24.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) a plastic comb (b) dry hair (c) vinegar (d) tiny paper bits
25. 25.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) a balloon (b) a mirror (c) a plastic comb (d) dry hair
26. 26.⚡ A rubbed comb is held near tiny paper bits. What happens? (a) jumps to the comb (b) does not move
27. 27.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? Which of these is what we measure? (a) number of rubs (b) the paper bit size (c) the same hair (d) paper bits picked up
28. 28.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: number of rubs is the one thing we change. (a) True (b) False
29. 29.⚡ A rubbed comb is held near puffed rice. What happens? (a) does not move (b) jumps to the comb
30. 30.⚡ Why does the comb trick work best on a dry day? (a) dry days are noisy (b) wet hair is magnetic (c) damp air leaks charge (d) water adds charge
31. 31.📘 Rubbing moves tiny charges. What do we call the charge that builds up? (a) gravity (b) static electricity (c) sunlight (d) magnetism
32. 32.🧺 Do we need dry hair for the static comb? (a) needed (b) not needed
33. 33.⚡ A rubbed comb is held near a heavy book. What happens? (a) does not move (b) jumps to the comb
34. 34.⚖️ 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 comb (c) number of rubs (d) the same hair
35. 35.⚡ A rubbed comb is held near a brick. What happens? (a) jumps to the comb (b) does not move
36. 36.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: the paper bit size is what we measure. (a) False (b) True
37. 37.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: distance to the paper is the one thing we change. (a) True (b) False
38. 38.⚖️ 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) the same hair (c) number of rubs
39. 39.True or false: yeast is not needed for the static comb. (a) False (b) True
40. 40.True or false: puffed rice jumps to a charged comb. (a) True (b) False

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