Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 915 · 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 stopwatch (b) a string (c) a ruler (d) yeast
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a battery cell (d) a heavy nut or washer
3. 3.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) it cannot swing (c) much faster (d) about the same
4. 4.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it becomes 4 times (d) it doubles
5. 5.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a heavy nut or washer (c) yeast (d) turmeric powder
6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) how far we pull it back (c) the weight of the bob (d) the same hook
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a heavy nut or washer (d) a magnet
8. 8.⚖️ 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 weight of the bob
9. 9.🧺 Which of these is needed for the pendulum? (a) a mirror (b) turmeric powder (c) a string (d) yeast
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the string length (b) time for 10 swings (c) how far we pull it back (d) the same hook
11. 11.🕰️ 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
12. 12.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a phone (c) a grandfather clock (d) a sundial
13. 13.🛟 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
14. 14.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) the bob could hit you (c) it is wet (d) it is hot
15. 15.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
16. 16.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) a string (d) a battery cell
17. 17.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a pencil and tape (c) a ruler (d) a stopwatch
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a stopwatch (d) a balloon
20. 20.⚖️ 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) False (b) True
21. 21.⚖️ 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) False (b) True
22. 22.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) False (b) True
24. 24.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
25. 25.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
26. 26.True or false: a magnet is not needed for the pendulum. (a) True (b) False
27. 27.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a magnet (c) a heavy nut or washer (d) a stopwatch
28. 28.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) heavier (d) slower
29. 29.⚖️ 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
30. 30.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
32. 32.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
33. 33.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a mirror (d) a pencil and tape
34. 34.True or false: a balloon is needed for the pendulum. (a) True (b) False
35. 35.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
36. 36.⚖️ 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 keep it the same (c) we measure it
37. 37.⚖️ 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
38. 38.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
39. 39.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
40. 40.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed

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