Static Electricity Experiment Worksheet

Science experiments lesson 21: Static electricity: comb and paper bits · Set 975 · 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? Which of these is kept the same? (a) the same comb (b) paper bits picked up (c) number of rubs
2. 2.⚡ You comb dry hair and hold the comb near tiny paper bits. What happens? (a) the bits jump to it (b) they turn wet (c) they turn blue (d) nothing happens
3. 3.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) vinegar (b) tiny paper bits (c) a plastic comb (d) a balloon
4. 4.🔮 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
5. 5.True or false: a heavy book jumps to a charged comb. (a) False (b) True
6. 6.⚖️ 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
7. 7.⚡ A rubbed comb is held near a pebble. What happens? (a) jumps to the comb (b) does not move
8. 8.True or false: a thin water stream does not move to a charged comb. (a) False (b) True
9. 9.🧺 Which of these is needed for the static comb? (a) dry hair (b) a magnet (c) vinegar (d) a battery cell
10. 10.⚡ Which of these does not move to a charged comb? (a) a thin water stream (b) puffed rice (c) tiny paper bits (d) a brick
11. 11.🧺 Do we need tiny paper bits for the static comb? (a) not needed (b) needed
12. 12.⚖️ 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
13. 13.⚖️ 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) the same comb (c) distance to the paper (d) paper bits picked up
14. 14.🔍 Which is the odd one out? (a) puffed rice (b) a steel spoon (c) thermocol bits (d) tiny paper bits
15. 15.⚡ A rubbed comb is held near a brick. What happens? (a) does not move (b) jumps to the comb
16. 16.🔍 Which is the odd one out? (a) a heavy book (b) a thin water stream (c) a steel spoon (d) a brick
17. 17.True or false: dry hair jumps to a charged comb. (a) False (b) True
18. 18.🧺 Do we need a plastic comb for the static comb? (a) needed (b) not needed
19. 19.True or false: thermocol bits jumps to a charged comb. (a) True (b) False
20. 20.True or false: a magnet is needed for the static comb. (a) False (b) True
21. 21.True or false: tiny paper bits jumps to a charged comb. (a) False (b) True
22. 22.⚡ Which of these does not move to a charged comb? (a) tiny paper bits (b) a thin water stream (c) puffed rice (d) a heavy book
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.🔍 Which is the odd one out? (a) a steel spoon (b) a pebble (c) a brick (d) tiny paper bits
25. 25.⚡ A rubbed comb is held near a thin water stream. What happens? (a) jumps to the comb (b) does not move
26. 26.🧺 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) dry hair
27. 27.🧺 Which of these is needed for the static comb? (a) a plastic comb (b) a battery cell (c) turmeric powder (d) yeast
28. 28.⚖️ 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
29. 29.⚖️ 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
30. 30.⚡ Why does the comb trick work best on a dry day? (a) wet hair is magnetic (b) water adds charge (c) dry days are noisy (d) damp air leaks charge
31. 31.🔮 Predict: you rub a balloon on dry hair and hold it on a wall. What happens? (a) it sticks for a while (b) it bursts at once (c) it falls straight down (d) it turns into water
32. 32.True or false: yeast is needed for the static comb. (a) True (b) False
33. 33.True or false: a magnet is not needed for the static comb. (a) True (b) False
34. 34.True or false: vinegar is not needed for the static comb. (a) True (b) False
35. 35.⚡ A rubbed comb is held near tiny paper bits. What happens? (a) jumps to the comb (b) does not move
36. 36.📘 Rubbing moves tiny charges. What do we call the charge that builds up? (a) sunlight (b) static electricity (c) magnetism (d) gravity
37. 37.⚖️ 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) True (b) False
38. 38.True or false: vinegar is needed for the static comb. (a) False (b) True
39. 39.🧺 Which of these is needed for the static comb? (a) yeast (b) a magnet (c) tiny paper bits (d) a battery cell
40. 40.🛟 There is lightning outside. Where is it safest to be? (a) in an open field (b) on a rooftop (c) under a tall tree (d) indoors

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