Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 570 · 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.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) yes, much faster (c) it stops swinging (d) no, hardly at all
2. 2.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
3. 3.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a ruler (c) a battery cell (d) turmeric powder
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a pencil and tape (d) a mirror
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the same hook (b) the weight of the bob (c) time for 10 swings (d) the string length
6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
7. 7.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a heavy nut or washer (c) a magnet (d) a mirror
8. 8.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a balloon (c) a string (d) a heavy nut or washer
9. 9.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
10. 10.⚖️ 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
11. 11.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a glass bottle (d) a sharp tool
12. 12.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
13. 13.⚖️ 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 weight of the bob (c) time for 10 swings
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we measure it (c) we change it
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.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
17. 17.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a sundial (c) a digital watch (d) a grandfather clock
18. 18.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) slower (d) heavier
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a heavy nut or washer (d) yeast
20. 20.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a string (c) turmeric powder (d) a magnet
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) False (b) True
22. 22.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 54 seconds?
23. 23.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) 10 is a lucky number (c) one swing is too slow (d) it is more fun
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
25. 25.⚖️ 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
26. 26.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) the bob could hit you (d) it is hot
27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a ruler (d) a balloon
28. 28.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) it cannot swing (c) much faster (d) much slower
29. 29.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
30. 30.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) False (b) True
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) time for 10 swings (c) the weight of the bob (d) how far we pull it back
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a battery cell (c) a ruler (d) a string
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
34. 34.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
35. 35.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
37. 37.True or false: yeast is needed for the pendulum. (a) True (b) False
38. 38.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
39. 39.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
40. 40.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?

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