Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 520 · 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.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
2. 2.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) time for 10 swings (c) how far we pull it back (d) the same hook
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) turmeric powder (d) a pencil and tape
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a grandfather clock (c) a digital watch (d) a sundial
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a stopwatch (d) a balloon
8. 8.⚖️ 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 measure it (b) we keep it the same (c) we change it
9. 9.True or false: a ruler is not needed for the pendulum. (a) False (b) True
10. 10.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) it is magnetic (d) the bob could hit you
11. 11.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) no, hardly at all (c) yes, much slower (d) it stops swinging
12. 12.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) a magnet (d) a pencil and tape
13. 13.🧺 Which of these is needed for the pendulum? (a) yeast (b) a battery cell (c) a mirror (d) a pencil and tape
14. 14.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) True (b) False
16. 16.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
17. 17.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it doubles (c) it halves (d) it becomes 4 times
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a battery cell (d) a ruler
19. 19.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) a heavy nut or washer (d) a mirror
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) how far we pull it back (c) the string length
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) the same hook (c) time for 10 swings
22. 22.🕰️ 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) 10 is a lucky number (d) it is more accurate
23. 23.True or false: a magnet is not needed for the pendulum. (a) False (b) True
24. 24.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the same hook (c) the string length (d) the weight of the bob
26. 26.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) yeast (c) a stopwatch (d) a string
28. 28.🧺 Which of these is not needed for the pendulum? (a) a string (b) turmeric powder (c) a stopwatch (d) a ruler
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is kept the same. (a) False (b) True
31. 31.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
32. 32.True or false: yeast is not needed for the pendulum. (a) False (b) True
33. 33.True or false: a magnet is needed for the pendulum. (a) False (b) True
34. 34.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
35. 35.🧺 Which of these is needed for the pendulum? (a) a string (b) a balloon (c) turmeric powder (d) a mirror
36. 36.True or false: a balloon is needed for the pendulum. (a) False (b) True
37. 37.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) about the same (d) it cannot swing
38. 38.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a small nut or washer (c) a sharp tool (d) a heavy brick
39. 39.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
40. 40.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed

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