Static Electricity Experiment Worksheet

Science experiments lesson 21: Static electricity: comb and paper bits · Set 974 · 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.🔮 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
2. 2.True or false: a battery cell is needed for the static comb. (a) True (b) False
3. 3.⚡ A rubbed comb is held near a brick. What happens? (a) does not move (b) jumps to the comb
4. 4.⚡ Why does the comb trick work best on a dry day? (a) wet hair is magnetic (b) water adds charge (c) damp air leaks charge (d) dry days are noisy
5. 5.⚡ Why does the rubbed comb pull the paper bits? (a) it is a magnet (b) it is hot (c) it has static charge (d) it is sticky
6. 6.🧺 Which of these is not needed for the static comb? (a) tiny paper bits (b) a plastic comb (c) yeast (d) a balloon
7. 7.🧺 Do we need a plastic comb for the static comb? (a) not needed (b) needed
8. 8.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “number of rubs”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.⚡ You comb dry hair and hold the comb near tiny paper bits. What happens? (a) they turn wet (b) nothing happens (c) they turn blue (d) the bits jump to it
10. 10.⚖️ 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) the paper bit size (c) the same comb (d) paper bits picked up
11. 11.True or false: a battery cell is not needed for the static comb. (a) True (b) False
12. 12.⚡ A rubbed comb is held near a pebble. What happens? (a) does not move (b) jumps to the comb
13. 13.True or false: a balloon is needed for the static comb. (a) False (b) True
14. 14.True or false: dry hair does not move to a charged comb. (a) True (b) False
15. 15.🔮 Predict: you rub a balloon on dry hair and hold it on a wall. What happens? (a) it turns into water (b) it falls straight down (c) it bursts at once (d) it sticks for a while
16. 16.⚡ Which big natural spark is caused by static electricity? (a) a rainbow (b) the wind (c) dew (d) lightning
17. 17.⚖️ 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
18. 18.🧺 Do we need vinegar for the static comb? (a) needed (b) not needed
19. 19.🧺 Which of these is needed for the static comb? (a) a magnet (b) dry hair (c) a battery cell (d) a mirror
20. 20.True or false: puffed rice jumps to a charged comb. (a) True (b) False
21. 21.⚡ Which of these jumps to a charged comb? (a) a steel spoon (b) a thin water stream (c) a pebble (d) a brick
22. 22.⚡ A rubbed comb is held near tiny paper bits. What happens? (a) does not move (b) jumps to the comb
23. 23.🧺 Which of these is not needed for the static comb? (a) tiny paper bits (b) dry hair (c) a balloon (d) a magnet
24. 24.⚡ Which of these does not move to a charged comb? (a) a thin water stream (b) tiny paper bits (c) a heavy book (d) thermocol bits
25. 25.⚡ Which of these does not move to a charged comb? (a) dry hair (b) a steel spoon (c) a thin water stream (d) puffed rice
26. 26.⚖️ 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 paper bit size (c) number of rubs (d) the same comb
27. 27.🧺 Do we need turmeric powder for the static comb? (a) not needed (b) needed
28. 28.🧺 Do we need a mirror for the static comb? (a) needed (b) not needed
29. 29.🧺 Three of these are needed for the static comb. Which one is NOT needed? (a) tiny paper bits (b) a balloon (c) vinegar (d) a plastic comb
30. 30.🧺 Which of these is not needed for the static comb? (a) turmeric powder (b) dry hair (c) tiny paper bits (d) a balloon
31. 31.🛟 There is lightning outside. Where is it safest to be? (a) on a rooftop (b) indoors (c) under a tall tree (d) in an open field
32. 32.⚡ A rubbed comb is held near a steel spoon. What happens? (a) does not move (b) jumps to the comb
33. 33.🛟 Static from a comb is safe. Which electricity must children never play with? (a) plug points at home (b) paper bits on a comb (c) a rubbed balloon (d) a rubbed plastic comb
34. 34.🔍 Which is the odd one out? (a) thermocol bits (b) a brick (c) dry hair (d) tiny paper bits
35. 35.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? True or false: the same comb is kept the same. (a) False (b) True
36. 36.True or false: tiny paper bits jumps to a charged comb. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a steel spoon (b) thermocol bits (c) tiny paper bits (d) dry hair
38. 38.📘 Rubbing moves tiny charges. What do we call the charge that builds up? (a) sunlight (b) gravity (c) magnetism (d) static electricity
39. 39.⚖️ Fair test — does rubbing the comb more times pick up more paper bits? What do we do with “the same hair”? (a) we measure it (b) we keep it the same (c) we change it
40. 40.🔍 Which is the odd one out? (a) a heavy book (b) a thin water stream (c) a pebble (d) a brick

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