Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 587 · 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? What do we do with “time for 10 swings”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.⚖️ 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
3. 3.⚖️ 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
4. 4.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a small nut or washer (d) a glass bottle
5. 5.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
6. 6.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
7. 7.⚖️ 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
8. 8.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a ruler (d) a magnet
9. 9.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 27 seconds?
10. 10.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) a string (d) yeast
12. 12.⚖️ 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
13. 13.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much slower (c) it stops swinging (d) yes, much faster
14. 14.🔮 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 halves (d) it becomes 4 times
15. 15.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a sundial (c) a phone (d) a grandfather clock
16. 16.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) a string (d) yeast
17. 17.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
18. 18.⚖️ 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
19. 19.🧺 Which of these is not needed for the pendulum? (a) a string (b) a battery cell (c) a stopwatch (d) a pencil and tape
20. 20.⚖️ 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
21. 21.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
22. 22.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
23. 23.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) stopped (d) heavier
24. 24.⚖️ 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
25. 25.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
26. 26.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) it is hot (d) the bob could hit you
27. 27.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
28. 28.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
30. 30.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
31. 31.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a battery cell (c) a magnet (d) a string
32. 32.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a balloon (c) yeast (d) turmeric powder
33. 33.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
34. 34.⚖️ 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
35. 35.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a ruler (c) turmeric powder (d) a magnet
36. 36.🕰️ 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
37. 37.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a heavy nut or washer (c) a pencil and tape (d) a string
38. 38.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
39. 39.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a string (d) a magnet

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