Static Electricity Experiment Worksheet

Science experiments lesson 21: Static electricity: comb and paper bits · Set 185 · 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.🧺 Which of these is needed for the static comb? (a) yeast (b) a battery cell (c) turmeric powder (d) dry hair
2. 2.🔮 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
3. 3.⚡ A rubbed comb is held near dry hair. What happens? (a) jumps to the comb (b) does not move
4. 4.True or false: puffed rice jumps to a charged comb. (a) False (b) True
5. 5.⚖️ 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
6. 6.⚖️ 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) paper bits picked up (d) the same comb
7. 7.🧺 Do we need a plastic comb for the static comb? (a) not needed (b) needed
8. 8.🛟 Static from a comb is safe. Which electricity must children never play with? (a) a rubbed plastic comb (b) paper bits on a comb (c) plug points at home (d) a rubbed balloon
9. 9.⚡ Which of these jumps to a charged comb? (a) a heavy book (b) tiny paper bits (c) a brick (d) a pebble
10. 10.🧺 Do we need turmeric powder for the static comb? (a) not needed (b) needed
11. 11.True or false: a plastic comb is not needed for the static comb. (a) False (b) True
12. 12.True or false: a pebble jumps to a charged comb. (a) True (b) False
13. 13.🔮 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
14. 14.🧺 Do we need a balloon for the static comb? (a) needed (b) not needed
15. 15.🛟 There is lightning outside. Where is it safest to be? (a) in an open field (b) indoors (c) under a tall tree (d) on a rooftop
16. 16.🔍 Which is the odd one out? (a) a steel spoon (b) a brick (c) a thin water stream (d) a heavy book
17. 17.True or false: dry hair does not move to a charged comb. (a) True (b) False
18. 18.🧺 Which of these is not needed for the static comb? (a) a plastic comb (b) a balloon (c) a magnet (d) dry hair
19. 19.⚖️ 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
20. 20.True or false: a mirror is not needed for the static comb. (a) False (b) True
21. 21.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) a mirror (b) a plastic comb (c) tiny paper bits (d) dry hair
22. 22.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: the same hair is the one thing we change. (a) False (b) True
23. 23.⚖️ 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
24. 24.True or false: a magnet is needed for the static comb. (a) True (b) False
25. 25.True or false: tiny paper bits is not needed for the static comb. (a) False (b) True
26. 26.⚡ Why does the rubbed comb pull the paper bits? (a) it is hot (b) it has static charge (c) it is a magnet (d) it is sticky
27. 27.🔍 Which is the odd one out? (a) a brick (b) thermocol bits (c) a heavy book (d) a pebble
28. 28.True or false: a balloon is needed for the static comb. (a) False (b) True
29. 29.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) a battery cell (b) a balloon (c) dry hair (d) tiny paper bits
30. 30.⚡ Which of these does not move to a charged comb? (a) a steel spoon (b) dry hair (c) tiny paper bits (d) a thin water stream
31. 31.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? Which of these is the one thing we change? (a) number of rubs (b) distance to the paper (c) the paper bit size (d) the same hair
32. 32.⚖️ 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
33. 33.⚖️ 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
34. 34.🔮 Predict: you rub a balloon on dry hair and hold it on a wall. What happens? (a) it bursts at once (b) it sticks for a while (c) it falls straight down (d) it turns into water
35. 35.🔍 Which is the odd one out? (a) puffed rice (b) a pebble (c) a thin water stream (d) thermocol bits
36. 36.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) dry hair (b) yeast (c) a balloon (d) tiny paper bits
37. 37.⚡ Why does the comb trick work best on a dry day? (a) water adds charge (b) dry days are noisy (c) wet hair is magnetic (d) damp air leaks charge
38. 38.🔍 Which is the odd one out? (a) a thin water stream (b) a brick (c) thermocol bits (d) dry hair
39. 39.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? Which of these is kept the same? (a) the paper bit size (b) paper bits picked up (c) number of rubs
40. 40.True or false: tiny paper bits does not move to a charged comb. (a) False (b) True

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