Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 829 · 40 questions

What you do (Only the length matters): 1. Tie the nut to the string and hang it from the taped pencil, 30 cm long. 2. Pull it a little to one side and let go — do not push. 3. Time 10 swings and divide by 10. 4. Change only the string length (60 cm), time 10 swings again, and stand back from the bob.

1. 1.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
2. 2.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
3. 3.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) a balloon (d) a stopwatch
4. 4.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it doubles (d) it becomes 4 times
5. 5.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
6. 6.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) stopped (d) heavier
7. 7.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is the one thing we change. (a) True (b) False
9. 9.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) one swing is too slow (c) it is more accurate (d) 10 is a lucky number
10. 10.True or false: a string is needed for the pendulum. (a) False (b) True
11. 11.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a stopwatch (c) a heavy nut or washer (d) a pencil and tape
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) time for 10 swings (b) the same hook (c) how far we pull it back (d) the string length
14. 14.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is the one thing we change. (a) False (b) True
16. 16.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) no, hardly at all (c) it stops swinging (d) yes, much slower
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) False (b) True
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a pencil and tape (c) a ruler (d) a heavy nut or washer
19. 19.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a mirror (d) a heavy nut or washer
20. 20.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
21. 21.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) magnetism (c) gravity (d) the string
22. 22.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a heavy nut or washer (c) a balloon (d) a magnet
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “how far we pull it back”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) False (b) True
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a mirror (d) a string
26. 26.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
30. 30.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
31. 31.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a magnet (c) turmeric powder (d) a stopwatch
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) turmeric powder (c) a stopwatch (d) a ruler
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) how far we pull it back (c) the same hook (d) time for 10 swings
34. 34.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a grandfather clock (c) a sundial (d) a phone
35. 35.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) a pencil and tape (d) a battery cell
36. 36.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a stopwatch (d) a battery cell
38. 38.True or false: a battery cell is needed for the pendulum. (a) False (b) True
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True

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