Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 492 · 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 a balloon for the pendulum? (a) needed (b) not needed
2. 2.⚖️ 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
3. 3.🧺 Which of these is needed for the pendulum? (a) a mirror (b) yeast (c) a battery cell (d) a string
4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.⚖️ 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
6. 6.⚖️ 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 change it (c) we keep it the same
7. 7.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) the bob could hit you (d) it is magnetic
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) turmeric powder (c) a heavy nut or washer (d) a stopwatch
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a balloon (d) a pencil and tape
10. 10.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
11. 11.⚖️ 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
12. 12.⚖️ 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
13. 13.True or false: a ruler is not needed for the pendulum. (a) True (b) False
14. 14.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
15. 15.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
16. 16.⚖️ 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) the same hook (c) the string length
17. 17.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) turmeric powder (d) a balloon
18. 18.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more accurate (c) it is more fun (d) one swing is too slow
19. 19.⚖️ 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 string length (c) how far we pull it back (d) the weight of the bob
20. 20.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
21. 21.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 15 seconds?
22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a ruler (c) a heavy nut or washer (d) a string
23. 23.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
24. 24.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a phone (c) a sundial (d) a digital watch
25. 25.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a heavy nut or washer (d) yeast
26. 26.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
27. 27.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a mirror (c) a stopwatch (d) a ruler
29. 29.True or false: a balloon is not needed for the pendulum. (a) False (b) True
30. 30.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it stays the same (c) it becomes 4 times (d) it halves
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings
32. 32.True or false: yeast is needed for the pendulum. (a) False (b) True
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
34. 34.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a magnet (c) a stopwatch (d) a battery cell
35. 35.True or false: a balloon is needed for the pendulum. (a) False (b) True
36. 36.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much slower (c) yes, much faster (d) no, hardly at all
37. 37.⚖️ 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 change it (c) we measure it
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) how far we pull it back (c) the string length (d) time for 10 swings
39. 39.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the string (c) magnetism (d) the wind
40. 40.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a ruler (d) a battery cell

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