Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 936 · 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) time for 10 swings (c) the string length
2. 2.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
3. 3.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
4. 4.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) it stops swinging (c) yes, much slower (d) yes, much faster
5. 5.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a heavy nut or washer (c) yeast (d) a battery cell
6. 6.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a balloon (d) a string
7. 7.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
8. 8.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
9. 9.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) yeast (c) a mirror (d) a pencil and tape
10. 10.⚖️ 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) True (b) False
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.⚖️ 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
13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a magnet (d) a pencil and tape
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a balloon (c) a string (d) a heavy nut or washer
15. 15.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a ruler (c) a heavy nut or washer (d) a stopwatch
16. 16.⚖️ 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
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the same hook (c) how far we pull it back (d) time for 10 swings
18. 18.⚖️ 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
19. 19.⚖️ 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 change it (b) we keep it the same (c) we measure it
20. 20.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) a heavy nut or washer (d) a balloon
21. 21.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a shorter string (d) a longer string
22. 22.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
23. 23.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) 10 is a lucky number (c) one swing is too slow (d) it is more accurate
24. 24.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it becomes 4 times (c) it stays the same (d) it halves
25. 25.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
26. 26.⚖️ 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 keep it the same (c) we measure it
27. 27.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) the bob could hit you (d) it is hot
28. 28.True or false: a ruler is not needed for the pendulum. (a) True (b) False
29. 29.True or false: yeast is needed for the pendulum. (a) False (b) True
30. 30.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a digital watch (c) a phone (d) a grandfather clock
31. 31.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) about the same (c) it cannot swing (d) much slower
32. 32.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a heavy brick (c) a glass bottle (d) a small nut or washer
33. 33.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
34. 34.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) False (b) True
36. 36.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
37. 37.🧺 Which of these is not needed for the pendulum? (a) a string (b) a battery cell (c) a ruler (d) a heavy nut or washer
38. 38.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
39. 39.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) yeast (c) a string (d) a pencil and tape
40. 40.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?

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