Static Electricity Experiment Worksheet

Science experiments lesson 21: Static electricity: comb and paper bits · Set 845 · 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.⚡ Why does the comb trick work best on a dry day? (a) dry days are noisy (b) wet hair is magnetic (c) damp air leaks charge (d) water adds charge
2. 2.🔮 Predict: a charged comb is held near a thin stream of tap water. What happens? (a) the stream bends (b) the water stops (c) the water freezes (d) nothing at all
3. 3.True or false: dry hair does not move to a charged comb. (a) False (b) True
4. 4.🧺 Which of these is needed for the static comb? (a) vinegar (b) yeast (c) a mirror (d) tiny paper bits
5. 5.🔍 Which is the odd one out? (a) a steel spoon (b) a thin water stream (c) a pebble (d) a heavy book
6. 6.⚡ Which of these jumps to a charged comb? (a) a heavy book (b) a brick (c) a pebble (d) dry hair
7. 7.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “distance to the paper”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.🛟 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
9. 9.🔍 Which is the odd one out? (a) puffed rice (b) dry hair (c) a pebble (d) thermocol bits
10. 10.⚡ A rubbed comb is held near a thin water stream. What happens? (a) jumps to the comb (b) does not move
11. 11.🔍 Which is the odd one out? (a) a heavy book (b) puffed rice (c) a steel spoon (d) a pebble
12. 12.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? Which of these is the one thing we change? (a) distance to the paper (b) the same hair (c) number of rubs (d) paper bits picked up
13. 13.⚡ Which of these does not move to a charged comb? (a) puffed rice (b) thermocol bits (c) dry hair (d) a brick
14. 14.⚡ A rubbed comb is held near a brick. What happens? (a) does not move (b) jumps to the comb
15. 15.True or false: a brick jumps to a charged comb. (a) True (b) False
16. 16.⚡ You comb dry hair and hold the comb near tiny paper bits. What happens? (a) nothing happens (b) they turn wet (c) the bits jump to it (d) they turn blue
17. 17.🧺 Do we need dry hair for the static comb? (a) needed (b) not needed
18. 18.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? Which of these is kept the same? (a) the same hair (b) paper bits picked up (c) number of rubs
19. 19.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: the paper bit size is kept the same. (a) True (b) False
20. 20.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) yeast (b) a balloon (c) tiny paper bits (d) a plastic comb
21. 21.🛟 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) a rubbed balloon (d) plug points at home
22. 22.True or false: tiny paper bits is needed for the static comb. (a) False (b) True
23. 23.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: number of rubs is the one thing we change. (a) False (b) True
24. 24.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: the paper bit size is what we measure. (a) False (b) True
25. 25.True or false: vinegar is not needed for the static comb. (a) False (b) True
26. 26.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? Which of these is what we measure? (a) the same hair (b) paper bits picked up (c) the paper bit size (d) distance to the paper
27. 27.⚖️ 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 measure it (c) we change it
28. 28.📘 Rubbing moves tiny charges. What do we call the charge that builds up? (a) static electricity (b) sunlight (c) gravity (d) magnetism
29. 29.🧺 Which of these is needed for the static comb? (a) a mirror (b) a plastic comb (c) vinegar (d) yeast
30. 30.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) a battery cell (b) a balloon (c) tiny paper bits (d) a plastic comb
31. 31.🧺 Do we need turmeric powder for the static comb? (a) needed (b) not needed
32. 32.⚖️ 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) the same comb
33. 33.🧺 Which of these is needed for the static comb? (a) dry hair (b) vinegar (c) a magnet (d) a battery cell
34. 34.True or false: dry hair is needed for the static comb. (a) True (b) False
35. 35.⚡ Which of these does not move to a charged comb? (a) dry hair (b) thermocol bits (c) puffed rice (d) a pebble
36. 36.⚡ Why does the rubbed comb pull the paper bits? (a) it is a magnet (b) it has static charge (c) it is sticky (d) it is hot
37. 37.🔍 Which is the odd one out? (a) tiny paper bits (b) a thin water stream (c) a heavy book (d) puffed rice
38. 38.🔮 Predict: you wet the comb before trying again. What happens? (a) it hardly works (b) it works better (c) it becomes a magnet (d) it lights up
39. 39.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) a plastic comb (b) vinegar (c) dry hair (d) a balloon
40. 40.True or false: tiny paper bits does not move to a charged comb. (a) True (b) False

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