Static Electricity Experiment Worksheet

Science experiments lesson 21: Static electricity: comb and paper bits · Set 413 · 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.True or false: a thin water stream does not move to a charged comb. (a) True (b) False
2. 2.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? Which of these is the one thing we change? (a) paper bits picked up (b) the same hair (c) number of rubs (d) the same comb
3. 3.⚖️ 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 same comb
4. 4.⚡ A rubbed comb is held near a brick. What happens? (a) does not move (b) jumps to the comb
5. 5.🔮 Predict: you rub a balloon on dry hair and hold it on a wall. What happens? (a) it sticks for a while (b) it falls straight down (c) it turns into water (d) it bursts at once
6. 6.True or false: dry hair does not move to a charged comb. (a) True (b) False
7. 7.⚡ A rubbed comb is held near a pebble. What happens? (a) does not move (b) jumps to the comb
8. 8.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: paper bits picked up is what we measure. (a) False (b) True
9. 9.🔮 Predict: a charged comb is held near a thin stream of tap water. What happens? (a) the water stops (b) nothing at all (c) the water freezes (d) the stream bends
10. 10.⚡ 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
11. 11.🔮 Predict: you wet the comb before trying again. What happens? (a) it lights up (b) it hardly works (c) it becomes a magnet (d) it works better
12. 12.🧺 Which of these is not needed for the static comb? (a) a balloon (b) dry hair (c) yeast (d) tiny paper bits
13. 13.🧺 Do we need a mirror for the static comb? (a) not needed (b) needed
14. 14.⚡ You comb dry hair and hold the comb near tiny paper bits. What happens? (a) nothing happens (b) they turn blue (c) they turn wet (d) the bits jump to it
15. 15.🧺 Which of these is needed for the static comb? (a) dry hair (b) yeast (c) a mirror (d) turmeric powder
16. 16.True or false: vinegar is not needed for the static comb. (a) False (b) True
17. 17.⚡ Which big natural spark is caused by static electricity? (a) a rainbow (b) lightning (c) dew (d) the wind
18. 18.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? Which of these is kept the same? (a) number of rubs (b) paper bits picked up (c) distance to the paper
19. 19.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “paper bits picked up”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.⚡ Which of these does not move to a charged comb? (a) thermocol bits (b) puffed rice (c) a heavy book (d) tiny paper bits
21. 21.📘 Rubbing moves tiny charges. What do we call the charge that builds up? (a) magnetism (b) gravity (c) sunlight (d) static electricity
22. 22.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: the same comb is the one thing we change. (a) True (b) False
23. 23.🧺 Do we need a balloon for the static comb? (a) not needed (b) needed
24. 24.🧺 Do we need vinegar for the static comb? (a) needed (b) not needed
25. 25.⚖️ 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
26. 26.🧺 Which of these is needed for the static comb? (a) a magnet (b) turmeric powder (c) a balloon (d) a mirror
27. 27.🧺 Which of these is not needed for the static comb? (a) a balloon (b) tiny paper bits (c) a plastic comb (d) a magnet
28. 28.⚖️ 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 measure it (c) we keep it the same
29. 29.True or false: turmeric powder is not needed for the static comb. (a) False (b) True
30. 30.🧺 Do we need dry hair for the static comb? (a) not needed (b) needed
31. 31.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: paper bits picked up is kept the same. (a) True (b) False
32. 32.True or false: a mirror is needed for the static comb. (a) True (b) False
33. 33.⚡ Which of these jumps to a charged comb? (a) a brick (b) a thin water stream (c) a heavy book (d) a steel spoon
34. 34.⚡ A rubbed comb is held near a heavy book. What happens? (a) jumps to the comb (b) does not move
35. 35.True or false: tiny paper bits is needed for the static comb. (a) False (b) True
36. 36.True or false: a balloon is needed for the static comb. (a) True (b) False
37. 37.🧺 Which of these is needed for the static comb? (a) yeast (b) vinegar (c) tiny paper bits (d) a magnet
38. 38.⚡ Which of these jumps to a charged comb? (a) tiny paper bits (b) a pebble (c) a brick (d) a steel spoon
39. 39.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “the same comb”? (a) we measure it (b) we keep it the same (c) we change it
40. 40.🛟 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

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