Static Electricity Experiment Worksheet

Science experiments lesson 21: Static electricity: comb and paper bits · Set 72 · 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.⚡ A rubbed comb is held near a thin water stream. What happens? (a) jumps to the comb (b) does not move
2. 2.⚡ Why does the comb trick work best on a dry day? (a) wet hair is magnetic (b) damp air leaks charge (c) dry days are noisy (d) water adds charge
3. 3.⚖️ 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 change it (c) we keep it the same
4. 4.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? Which of these is what we measure? (a) distance to the paper (b) paper bits picked up (c) number of rubs (d) the paper bit size
5. 5.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: the same hair is what we measure. (a) False (b) True
6. 6.⚡ Which of these jumps to a charged comb? (a) a heavy book (b) a brick (c) a pebble (d) tiny paper bits
7. 7.⚡ Which of these does not move to a charged comb? (a) puffed rice (b) a brick (c) tiny paper bits (d) a thin water stream
8. 8.🧺 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) turmeric powder
9. 9.🔮 Predict: a charged comb is held near a thin stream of tap water. What happens? (a) the water freezes (b) the water stops (c) the stream bends (d) nothing at all
10. 10.⚡ You comb dry hair and hold the comb near tiny paper bits. What happens? (a) the bits jump to it (b) they turn blue (c) they turn wet (d) nothing happens
11. 11.True or false: a magnet is not needed for the static comb. (a) True (b) False
12. 12.⚡ A rubbed comb is held near a brick. What happens? (a) jumps to the comb (b) does not move
13. 13.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: the same comb is kept the same. (a) True (b) False
14. 14.⚡ Which of these does not move to a charged comb? (a) a thin water stream (b) puffed rice (c) a pebble (d) thermocol bits
15. 15.True or false: thermocol bits jumps to a charged comb. (a) True (b) False
16. 16.📘 Rubbing moves tiny charges. What do we call the charge that builds up? (a) magnetism (b) sunlight (c) gravity (d) static electricity
17. 17.🛟 Static from a comb is safe. Which electricity must children never play with? (a) a rubbed plastic comb (b) a rubbed balloon (c) paper bits on a comb (d) plug points at home
18. 18.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) a balloon (b) dry hair (c) tiny paper bits (d) yeast
19. 19.⚡ A rubbed comb is held near a heavy book. What happens? (a) jumps to the comb (b) does not move
20. 20.True or false: a mirror is needed for the static comb. (a) True (b) False
21. 21.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: number of rubs is kept the same. (a) False (b) True
22. 22.🧺 Which of these is not needed for the static comb? (a) dry hair (b) a magnet (c) a balloon (d) tiny paper bits
23. 23.🔮 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
24. 24.🧺 Do we need dry hair for the static comb? (a) not needed (b) needed
25. 25.⚡ A rubbed comb is held near thermocol bits. What happens? (a) jumps to the comb (b) does not move
26. 26.🧺 Do we need yeast for the static comb? (a) needed (b) not needed
27. 27.True or false: dry hair is needed for the static comb. (a) False (b) True
28. 28.True or false: dry hair jumps to a charged comb. (a) False (b) True
29. 29.⚡ A rubbed comb is held near a steel spoon. What happens? (a) does not move (b) jumps to the comb
30. 30.🔍 Which is the odd one out? (a) a heavy book (b) a brick (c) a steel spoon (d) puffed rice
31. 31.True or false: tiny paper bits 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? True or false: the same hair is kept the same. (a) False (b) True
33. 33.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) dry hair (b) a battery cell (c) a balloon (d) tiny paper bits
34. 34.⚡ Which of these jumps to a charged comb? (a) a brick (b) a steel spoon (c) a pebble (d) puffed rice
35. 35.🧺 Which of these is needed for the static comb? (a) dry hair (b) vinegar (c) a battery cell (d) yeast
36. 36.True or false: yeast is needed for the static comb. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) tiny paper bits (b) dry hair (c) puffed rice (d) a heavy book
38. 38.True or false: a mirror is not needed for the static comb. (a) True (b) False
39. 39.⚖️ 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
40. 40.🛟 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

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