Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 764 · 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? Which of these is kept the same? (a) how far we pull it back (b) the string length (c) time for 10 swings
2. 2.⚖️ 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
3. 3.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a small nut or washer (d) a glass bottle
4. 4.⚖️ 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) the same hook (d) how far we pull it back
5. 5.⚖️ 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) False (b) True
6. 6.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is hot (c) it is wet (d) it is magnetic
7. 7.⚖️ 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 keep it the same (b) we measure it (c) we change it
8. 8.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
9. 9.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) the string (c) gravity (d) magnetism
10. 10.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
11. 11.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) no, hardly at all (c) yes, much faster (d) it stops swinging
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.True or false: a ruler is not needed for the pendulum. (a) True (b) False
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a stopwatch (c) a heavy nut or washer (d) a ruler
15. 15.⚖️ 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
16. 16.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
17. 17.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a pencil and tape (c) a magnet (d) a ruler
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a stopwatch (c) a pencil and tape (d) a string
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a balloon (d) a heavy nut or washer
20. 20.⚖️ 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
21. 21.⚖️ 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 keep it the same (c) we measure it
22. 22.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
23. 23.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) quicker (d) stopped
24. 24.True or false: a string is not needed for the pendulum. (a) True (b) False
25. 25.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
26. 26.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 17 seconds?
27. 27.⚖️ 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
28. 28.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a heavy nut or washer (c) a balloon (d) a stopwatch
29. 29.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a string (c) a stopwatch (d) a ruler
31. 31.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) a string (d) a balloon
32. 32.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a pencil and tape (c) a battery cell (d) a ruler
33. 33.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) it cannot swing (c) much faster (d) about the same
34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) the same hook
35. 35.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) turmeric powder (d) a heavy nut or washer
36. 36.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a stopwatch (c) a mirror (d) a string
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.True or false: a battery cell is needed for the pendulum. (a) True (b) False
39. 39.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 18 seconds?
40. 40.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True

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