Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 311 · 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.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a heavier bob (d) a lighter bob
2. 2.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
3. 3.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is hot (c) it is magnetic (d) it is wet
4. 4.🧺 Which of these is needed for the pendulum? (a) a string (b) a mirror (c) turmeric powder (d) yeast
5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a balloon (c) a ruler (d) a heavy nut or washer
6. 6.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
7. 7.⚖️ 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 measure it (c) we keep it the same
8. 8.🕰️ 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
9. 9.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
10. 10.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.⚖️ 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
13. 13.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) the wind (c) gravity (d) magnetism
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a stopwatch (d) a magnet
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 change it (b) we measure it (c) we keep it the same
16. 16.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a sharp tool (d) a small nut or washer
17. 17.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) stopped (d) quicker
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a mirror (c) a stopwatch (d) a string
19. 19.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
20. 20.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
21. 21.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) a stopwatch (d) a mirror
22. 22.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
23. 23.True or false: yeast is needed for the pendulum. (a) True (b) False
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a battery cell (c) a heavy nut or washer (d) a pencil and tape
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the weight of the bob (b) time for 10 swings (c) the string length (d) how far we pull it back
26. 26.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
27. 27.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
28. 28.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a ruler (c) a string (d) a pencil and tape
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a pencil and tape (c) a stopwatch (d) a ruler
30. 30.True or false: a ruler is not needed for the pendulum. (a) True (b) False
31. 31.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.⚖️ 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 weight of the bob (c) the string length
34. 34.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a balloon (d) a heavy nut or washer
35. 35.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
36. 36.True or false: a mirror is not needed for the pendulum. (a) False (b) True
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) False (b) True
38. 38.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) turmeric powder (c) a balloon (d) a stopwatch
39. 39.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) yes, much slower (c) it stops swinging (d) no, hardly at all
40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) yeast (c) a ruler (d) a heavy nut or washer

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