Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 506 · 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 heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) about the same (c) much slower (d) it cannot swing
2. 2.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) one swing is too slow (c) it is more accurate (d) 10 is a lucky number
3. 3.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a phone (c) a digital watch (d) a grandfather clock
4. 4.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a battery cell (c) a ruler (d) a string
5. 5.True or false: yeast is not needed for the pendulum. (a) False (b) True
6. 6.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
7. 7.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) turmeric powder (c) a mirror (d) a magnet
8. 8.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) gravity (d) the string
9. 9.🧺 Which of these is needed for the pendulum? (a) yeast (b) a battery cell (c) a pencil and tape (d) a magnet
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
11. 11.True or false: a string is not needed for the pendulum. (a) True (b) False
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) how far we pull it back (c) time for 10 swings (d) the same hook
13. 13.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it becomes 4 times (c) it stays the same (d) it halves
14. 14.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a string (c) yeast (d) a battery cell
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) turmeric powder (c) a string (d) a stopwatch
16. 16.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 12 seconds?
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a pencil and tape (d) a magnet
18. 18.True or false: a ruler is needed for the pendulum. (a) False (b) True
19. 19.True or false: a ruler is not needed for the pendulum. (a) False (b) True
20. 20.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) no, hardly at all (c) yes, much faster (d) yes, much slower
21. 21.⚖️ 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
22. 22.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a magnet (c) a ruler (d) a stopwatch
23. 23.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
24. 24.⚖️ 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) how far we pull it back (c) the same hook (d) the string length
25. 25.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
26. 26.True or false: a mirror is needed for the pendulum. (a) True (b) False
27. 27.⚖️ 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
28. 28.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 18 seconds?
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a balloon (d) a stopwatch
30. 30.True or false: yeast is needed for the pendulum. (a) True (b) False
31. 31.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a ruler (c) yeast (d) a magnet
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a mirror (c) a pencil and tape (d) a ruler
33. 33.⚖️ 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
34. 34.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a small nut or washer (c) a heavy brick (d) a sharp tool
35. 35.⚖️ 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
36. 36.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 16 seconds?
37. 37.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) yeast (c) a ruler (d) a heavy nut or washer
38. 38.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
39. 39.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is magnetic (c) the bob could hit you (d) it is hot
40. 40.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a longer string (d) a shorter string

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