Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 111 · 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 5 swings in 5 seconds. How many seconds does one swing take?
2. 2.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a heavier bob (c) a longer string (d) a lighter bob
3. 3.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 36 seconds?
4. 4.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) no, hardly at all (c) yes, much slower (d) it stops swinging
5. 5.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) a heavy nut or washer (d) yeast
6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the string length (c) the same hook (d) the weight of the bob
7. 7.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a small nut or washer (d) a sharp tool
8. 8.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
9. 9.⚖️ 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
10. 10.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it stays the same (c) it doubles (d) it halves
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) the string length (c) time for 10 swings
12. 12.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
13. 13.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) a mirror (d) a pencil and tape
14. 14.True or false: a balloon is needed for the pendulum. (a) True (b) False
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a ruler (c) a heavy nut or washer (d) a string
16. 16.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.⚖️ 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) the same hook (c) time for 10 swings (d) the string length
19. 19.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) it cannot swing (c) about the same (d) much faster
20. 20.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a heavy nut or washer (c) a string (d) a pencil and tape
21. 21.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) it is wet (d) the bob could hit you
22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a string (c) a pencil and tape (d) a stopwatch
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a stopwatch (d) a balloon
24. 24.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) yeast (c) a pencil and tape (d) a heavy nut or washer
25. 25.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a phone (c) a grandfather clock (d) a digital watch
26. 26.⚖️ 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 measure it (b) we change it (c) we keep it the same
27. 27.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) slower (d) quicker
28. 28.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
29. 29.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a ruler (c) a balloon (d) a magnet
30. 30.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
31. 31.⚖️ 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 change it (c) we measure it
32. 32.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) yeast (c) turmeric powder (d) a magnet
33. 33.True or false: yeast is not needed for the pendulum. (a) False (b) True
34. 34.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) a balloon (d) a stopwatch
35. 35.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 18 seconds?
36. 36.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) turmeric powder (c) a pencil and tape (d) a heavy nut or washer
37. 37.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the wind (c) the string (d) magnetism
38. 38.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
39. 39.True or false: a magnet is needed for the pendulum. (a) True (b) False
40. 40.True or false: a string is not needed for the pendulum. (a) False (b) True

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