Static Electricity Experiment Worksheet

Science experiments lesson 21: Static electricity: comb and paper bits · Set 233 · 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.⚡ You comb dry hair and hold the comb near tiny paper bits. What happens? (a) they turn wet (b) nothing happens (c) they turn blue (d) the bits jump to it
2. 2.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? Which of these is what we measure? (a) the paper bit size (b) the same hair (c) number of rubs (d) paper bits picked up
3. 3.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: distance to the paper is what we measure. (a) True (b) False
4. 4.⚡ Which of these does not move to a charged comb? (a) a thin water stream (b) a brick (c) puffed rice (d) tiny paper bits
5. 5.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “paper bits picked up”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.⚖️ 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
7. 7.🧺 Which of these is not needed for the static comb? (a) a plastic comb (b) tiny paper bits (c) dry hair (d) turmeric powder
8. 8.🧺 Do we need tiny paper bits for the static comb? (a) not needed (b) needed
9. 9.🔮 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
10. 10.🔍 Which is the odd one out? (a) a heavy book (b) a pebble (c) a steel spoon (d) tiny paper bits
11. 11.True or false: a thin water stream jumps to a charged comb. (a) True (b) False
12. 12.⚡ Why does the comb trick work best on a dry day? (a) dry days are noisy (b) wet hair is magnetic (c) water adds charge (d) damp air leaks charge
13. 13.True or false: vinegar is not needed for the static comb. (a) True (b) False
14. 14.True or false: vinegar is needed for the static comb. (a) True (b) False
15. 15.⚖️ 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) distance to the paper (c) number of rubs
16. 16.True or false: a battery cell is needed for the static comb. (a) False (b) True
17. 17.🧺 Which of these is not needed for the static comb? (a) a battery cell (b) tiny paper bits (c) a balloon (d) dry hair
18. 18.⚡ Which of these jumps to a charged comb? (a) a brick (b) a heavy book (c) a steel spoon (d) thermocol bits
19. 19.⚖️ 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
20. 20.🔮 Predict: you rub a balloon on dry hair and hold it on a wall. What happens? (a) it falls straight down (b) it bursts at once (c) it sticks for a while (d) it turns into water
21. 21.🛟 There is lightning outside. Where is it safest to be? (a) indoors (b) under a tall tree (c) on a rooftop (d) in an open field
22. 22.⚡ Why does the rubbed comb pull the paper bits? (a) it is sticky (b) it is a magnet (c) it is hot (d) it has static charge
23. 23.🛟 Static from a comb is safe. Which electricity must children never play with? (a) paper bits on a comb (b) plug points at home (c) a rubbed balloon (d) a rubbed plastic comb
24. 24.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) a balloon (b) a battery cell (c) a plastic comb (d) tiny paper bits
25. 25.True or false: a brick does not move to a charged comb. (a) True (b) False
26. 26.⚡ Which of these jumps to a charged comb? (a) a steel spoon (b) a pebble (c) a thin water stream (d) a brick
27. 27.True or false: turmeric powder is needed for the static comb. (a) True (b) False
28. 28.🧺 Which of these is needed for the static comb? (a) dry hair (b) a battery cell (c) turmeric powder (d) a magnet
29. 29.⚡ Which of these does not move to a charged comb? (a) tiny paper bits (b) a thin water stream (c) puffed rice (d) a steel spoon
30. 30.True or false: a steel spoon jumps to a charged comb. (a) True (b) False
31. 31.True or false: turmeric powder is not needed for the static comb. (a) True (b) False
32. 32.🧺 Do we need a balloon for the static comb? (a) not needed (b) needed
33. 33.🧺 Do we need a mirror for the static comb? (a) not needed (b) needed
34. 34.⚖️ 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
35. 35.⚖️ 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
36. 36.⚡ A rubbed comb is held near puffed rice. What happens? (a) jumps to the comb (b) does not move
37. 37.True or false: a mirror is not needed for the static comb. (a) True (b) False
38. 38.🧺 Do we need a battery cell for the static comb? (a) not needed (b) needed
39. 39.⚡ A rubbed comb is held near dry hair. What happens? (a) jumps to the comb (b) does not move
40. 40.🧺 Do we need dry hair for the static comb? (a) not needed (b) needed

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