Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 574 · 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 15 swings in 45 seconds. How many seconds does one swing take?
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a heavy nut or washer (d) a balloon
3. 3.True or false: a mirror is not needed for the pendulum. (a) True (b) False
4. 4.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
5. 5.⚖️ 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 measure it (c) we keep it the same
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) turmeric powder (d) a ruler
7. 7.🧺 Which of these is needed for the pendulum? (a) yeast (b) a stopwatch (c) a balloon (d) a magnet
8. 8.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
9. 9.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a heavier bob (c) a lighter bob (d) a longer string
10. 10.🛟 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
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) time for 10 swings (b) the weight of the bob (c) the string length (d) the same hook
12. 12.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) heavier (d) stopped
13. 13.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
14. 14.True or false: a magnet is not 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 string (b) a mirror (c) a heavy nut or washer (d) a stopwatch
16. 16.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a string (c) a heavy nut or washer (d) a pencil and tape
17. 17.⚖️ 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 string length (c) the same hook
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) True (b) False
19. 19.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
20. 20.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
22. 22.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a battery cell (c) a stopwatch (d) a string
23. 23.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
24. 24.⚖️ 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) True (b) False
25. 25.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) it is magnetic (d) the bob could hit you
26. 26.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a grandfather clock (c) a digital watch (d) a phone
27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a stopwatch (c) a string (d) a heavy nut or washer
28. 28.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
29. 29.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 36 seconds?
30. 30.⚖️ 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 string length (c) the same hook (d) time for 10 swings
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is the one thing we change. (a) False (b) True
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) yeast (c) a pencil and tape (d) a ruler
33. 33.🔮 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
34. 34.⚖️ 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
35. 35.🧺 Which of these is needed for the pendulum? (a) a magnet (b) yeast (c) a balloon (d) a pencil and tape
36. 36.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
37. 37.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) a string (d) yeast
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a magnet (c) a ruler (d) a string
39. 39.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 24 seconds?
40. 40.True or false: a string is not needed for the pendulum. (a) True (b) False

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