Simple Pendulum Experiment Worksheet

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

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