Static Electricity Experiment Worksheet

Science experiments lesson 21: Static electricity: comb and paper bits · Set 574 · 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 same hair”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) dry hair (b) yeast (c) tiny paper bits (d) a plastic comb
3. 3.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: distance to the paper is kept the same. (a) False (b) True
4. 4.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “the same comb”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.⚡ A rubbed comb is held near a heavy book. What happens? (a) jumps to the comb (b) does not move
6. 6.⚖️ 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 measure it (c) we change it
7. 7.🔮 Predict: a charged comb is held near a thin stream of tap water. What happens? (a) the water freezes (b) the stream bends (c) nothing at all (d) the water stops
8. 8.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) tiny paper bits (b) dry hair (c) a magnet (d) a plastic comb
9. 9.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) tiny paper bits (b) a mirror (c) a balloon (d) a plastic comb
10. 10.⚖️ 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) the same hair (c) number of rubs (d) paper bits picked up
11. 11.True or false: a balloon is needed for the static comb. (a) False (b) True
12. 12.True or false: turmeric powder is not needed for the static comb. (a) False (b) True
13. 13.⚡ A rubbed comb is held near a pebble. What happens? (a) does not move (b) jumps to the comb
14. 14.⚡ A rubbed comb is held near thermocol bits. What happens? (a) jumps to the comb (b) does not move
15. 15.⚡ Which of these jumps to a charged comb? (a) a heavy book (b) a pebble (c) a steel spoon (d) puffed rice
16. 16.⚡ Which of these jumps to a charged comb? (a) thermocol bits (b) a pebble (c) a steel spoon (d) a brick
17. 17.📘 Rubbing moves tiny charges. What do we call the charge that builds up? (a) magnetism (b) sunlight (c) gravity (d) static electricity
18. 18.⚡ Why does the rubbed comb pull the paper bits? (a) it is sticky (b) it has static charge (c) it is hot (d) it is a magnet
19. 19.⚡ Which of these jumps to a charged comb? (a) a heavy book (b) a pebble (c) a steel spoon (d) tiny paper bits
20. 20.🔮 Predict: you wet the comb before trying again. What happens? (a) it lights up (b) it works better (c) it becomes a magnet (d) it hardly works
21. 21.🧺 Do we need a balloon for the static comb? (a) needed (b) not needed
22. 22.🧺 Which of these is needed for the static comb? (a) vinegar (b) tiny paper bits (c) a magnet (d) yeast
23. 23.🛟 Static from a comb is safe. Which electricity must children never play with? (a) paper bits on a comb (b) a rubbed plastic comb (c) plug points at home (d) a rubbed balloon
24. 24.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) dry hair (b) a battery cell (c) tiny paper bits (d) a plastic comb
25. 25.🧺 Do we need a plastic comb for the static comb? (a) not needed (b) needed
26. 26.⚡ You comb dry hair and hold the comb near tiny paper bits. What happens? (a) they turn wet (b) they turn blue (c) nothing happens (d) the bits jump to it
27. 27.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “distance to the paper”? (a) we change it (b) we measure it (c) we keep it the same
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 keep it the same (c) we measure it
29. 29.🔍 Which is the odd one out? (a) a thin water stream (b) puffed rice (c) a brick (d) dry hair
30. 30.🔮 Predict: you rub a balloon on dry hair and hold it on a wall. What happens? (a) it bursts at once (b) it falls straight down (c) it sticks for a while (d) it turns into water
31. 31.🧺 Which of these is not needed for the static comb? (a) tiny paper bits (b) a plastic comb (c) a mirror (d) dry hair
32. 32.🧺 Do we need a magnet for the static comb? (a) needed (b) not needed
33. 33.True or false: yeast is needed for the static comb. (a) True (b) False
34. 34.⚡ A rubbed comb is held near dry hair. What happens? (a) does not move (b) jumps to the comb
35. 35.🧺 Do we need yeast for the static comb? (a) needed (b) not needed
36. 36.⚡ A rubbed comb is held near tiny paper bits. What happens? (a) does not move (b) jumps to the comb
37. 37.⚡ Why does the comb trick work best on a dry day? (a) dry days are noisy (b) water adds charge (c) wet hair is magnetic (d) damp air leaks charge
38. 38.True or false: vinegar is not needed for the static comb. (a) True (b) False
39. 39.⚡ Which of these does not move to a charged comb? (a) a steel spoon (b) puffed rice (c) a thin water stream (d) tiny paper bits
40. 40.True or false: a heavy book jumps to a charged comb. (a) False (b) True

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