Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 118 · 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.⚖️ 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
2. 2.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is wet (d) it is hot
3. 3.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a glass bottle (d) a sharp tool
4. 4.🧺 Which of these is needed for the pendulum? (a) a balloon (b) turmeric powder (c) a ruler (d) a mirror
5. 5.True or false: a balloon is not needed for the pendulum. (a) True (b) False
6. 6.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it halves (c) it doubles (d) it becomes 4 times
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) time for 10 swings (c) the string length
8. 8.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
9. 9.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) it cannot swing (d) much faster
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the string length (b) time for 10 swings (c) how far we pull it back (d) the weight of the bob
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) the string length (c) time for 10 swings
12. 12.⚖️ 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
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
15. 15.True or false: a string is not needed for the pendulum. (a) False (b) True
16. 16.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a sundial (c) a grandfather clock (d) a phone
17. 17.⚖️ 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) how far we pull it back (d) the weight of the bob
18. 18.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) it is more fun (c) one swing is too slow (d) 10 is a lucky number
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a pencil and tape (d) a mirror
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a string (c) a pencil and tape (d) a heavy nut or washer
21. 21.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) yeast (d) a ruler
22. 22.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
23. 23.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
24. 24.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) the string (c) magnetism (d) gravity
25. 25.🧺 Which of these is needed for the pendulum? (a) a mirror (b) yeast (c) a string (d) a balloon
26. 26.⚖️ 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 keep it the same (c) we change it
27. 27.⚖️ 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) True (b) False
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) slower (d) stopped
30. 30.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a balloon (c) a string (d) a ruler
32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) True (b) False
33. 33.True or false: a ruler is not needed for the pendulum. (a) True (b) False
34. 34.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
35. 35.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
36. 36.True or false: a magnet is needed for the pendulum. (a) True (b) False
37. 37.⚖️ 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
38. 38.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a balloon (c) a stopwatch (d) a heavy nut or washer
39. 39.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
40. 40.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed

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