Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 581 · 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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a mirror (c) a pencil and tape (d) a string
2. 2.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it becomes 4 times (c) it doubles (d) it stays the same
3. 3.⚖️ 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
4. 4.⚖️ 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) how far we pull it back (c) the string length
5. 5.True or false: yeast is needed for the pendulum. (a) False (b) True
6. 6.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) True (b) False
8. 8.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
9. 9.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a heavy brick (c) a small nut or washer (d) a glass bottle
10. 10.True or false: a string is needed for the pendulum. (a) True (b) False
11. 11.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a string (d) a magnet
12. 12.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more fun (c) one swing is too slow (d) it is more accurate
13. 13.⚖️ 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 change it (c) we keep it the same
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a pencil and tape (d) a magnet
15. 15.True or false: a mirror is not needed for the pendulum. (a) False (b) True
16. 16.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a ruler (c) a string (d) a heavy nut or washer
18. 18.True or false: a balloon is not needed for the pendulum. (a) True (b) False
19. 19.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) stopped (d) heavier
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) a string (d) a heavy nut or washer
21. 21.⚖️ 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
22. 22.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
23. 23.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) much slower (d) about the same
24. 24.⚖️ 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) how far we pull it back (d) the same hook
25. 25.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a lighter bob (c) a heavier bob (d) a longer string
26. 26.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a pencil and tape (d) yeast
27. 27.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) a battery cell (d) a stopwatch
28. 28.⚖️ 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) False (b) True
29. 29.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
30. 30.⚖️ 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) False (b) True
31. 31.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
32. 32.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) the bob could hit you (d) it is magnetic
33. 33.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
34. 34.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) turmeric powder (c) a string (d) a heavy nut or washer
35. 35.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a heavy nut or washer (c) a magnet (d) yeast
36. 36.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) the bob could hit you (c) it is magnetic (d) it is wet
37. 37.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) the string (c) magnetism (d) gravity
38. 38.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) yes, much faster (c) it stops swinging (d) no, hardly at all
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
40. 40.⚖️ 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

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