Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 364 · 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.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
2. 2.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) a ruler (d) yeast
3. 3.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
4. 4.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) gravity (c) magnetism (d) the wind
5. 5.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) slower (d) heavier
6. 6.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
7. 7.True or false: a string is not needed for the pendulum. (a) True (b) False
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 keep it the same (b) we change it (c) we measure it
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) True (b) False
10. 10.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it doubles (d) it becomes 4 times
11. 11.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
12. 12.True or false: a mirror is not needed for the pendulum. (a) False (b) True
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) how far we pull it back (c) the string length (d) the same hook
14. 14.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
15. 15.⚖️ 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 measure it (c) we change it
16. 16.True or false: a ruler is not needed for the pendulum. (a) False (b) True
17. 17.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
18. 18.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 10 seconds?
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a pencil and tape (d) a magnet
20. 20.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) a ruler (d) a battery cell
21. 21.⚖️ 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
22. 22.⚖️ 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 measure it (c) we keep it the same
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a stopwatch (d) a balloon
24. 24.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) a ruler (d) a mirror
25. 25.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) yeast (c) turmeric powder (d) a mirror
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a ruler (d) a mirror
27. 27.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 27 seconds?
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) yeast (d) a pencil and tape
29. 29.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) it is magnetic (d) the bob could hit you
30. 30.⚖️ 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
31. 31.⚖️ 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) the same hook (c) the weight of the bob (d) how far we pull it back
32. 32.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a string (c) a heavy nut or washer (d) a pencil and tape
33. 33.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a battery cell (c) a pencil and tape (d) a balloon
34. 34.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
35. 35.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) no, hardly at all (c) it stops swinging (d) yes, much faster
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
37. 37.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a heavy nut or washer (c) a pencil and tape (d) a string
38. 38.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a string (c) a magnet (d) a mirror
39. 39.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
40. 40.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a heavy brick (d) a small nut or washer

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