Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 465 · 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.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a shorter string (d) a longer string
2. 2.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
3. 3.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it becomes 4 times (c) it doubles (d) it stays the same
4. 4.⚖️ 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
5. 5.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
6. 6.🛟 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
7. 7.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a balloon (c) a battery cell (d) a string
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the weight of the bob (b) the string length (c) the same hook (d) time for 10 swings
9. 9.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) yeast (d) a pencil and tape
10. 10.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a pencil and tape (c) a ruler (d) a heavy nut or washer
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a ruler (d) a mirror
12. 12.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) about the same (c) it cannot swing (d) much faster
13. 13.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) quicker (d) stopped
14. 14.⚖️ 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
15. 15.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a sharp tool (d) a glass bottle
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a ruler (d) a balloon
17. 17.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) gravity (c) magnetism (d) the string
18. 18.True or false: a mirror is not needed for the pendulum. (a) True (b) False
19. 19.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
20. 20.True or false: a magnet is not needed for the pendulum. (a) True (b) False
21. 21.⚖️ 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
22. 22.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a stopwatch (c) a battery cell (d) yeast
23. 23.True or false: a magnet is needed for the pendulum. (a) False (b) True
24. 24.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
25. 25.⚖️ 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) True (b) False
26. 26.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) yeast (d) a pencil and tape
29. 29.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a pencil and tape (c) turmeric powder (d) yeast
30. 30.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) a ruler (d) a mirror
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a magnet (c) a string (d) a pencil and tape
32. 32.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a pencil and tape (c) a stopwatch (d) a balloon
33. 33.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
34. 34.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
35. 35.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) time for 10 swings (c) the string length
37. 37.True or false: yeast is needed for the pendulum. (a) False (b) True
38. 38.⚖️ 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) time for 10 swings (d) the same hook
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 measure it (b) we keep it the same (c) we change it
40. 40.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed

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