Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 949 · 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 balloon (b) a ruler (c) a heavy nut or washer (d) a string
2. 2.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) much slower (d) it cannot swing
3. 3.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
4. 4.True or false: a ruler is needed for the pendulum. (a) False (b) True
5. 5.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a stopwatch (c) turmeric powder (d) a battery cell
6. 6.⚖️ 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 keep it the same (b) we change it (c) we measure it
7. 7.⚖️ 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) how far we pull it back (d) time for 10 swings
8. 8.🛟 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
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) True (b) False
10. 10.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a sundial (c) a grandfather clock (d) a phone
11. 11.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
12. 12.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
13. 13.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 15 seconds?
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a magnet (d) a string
15. 15.⚖️ 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
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) yeast (c) a heavy nut or washer (d) a pencil and tape
17. 17.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a pencil and tape (c) a string (d) a heavy nut or washer
20. 20.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
21. 21.⚖️ 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
22. 22.⚖️ 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
23. 23.🛟 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
24. 24.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 12 seconds?
25. 25.⚖️ 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
26. 26.True or false: a mirror is needed for the pendulum. (a) False (b) True
27. 27.⚖️ 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
28. 28.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
29. 29.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more fun (c) one swing is too slow (d) it is more accurate
30. 30.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is kept the same. (a) False (b) True
31. 31.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
32. 32.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 20 seconds?
33. 33.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a ruler (c) turmeric powder (d) a battery cell
34. 34.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a balloon (c) a ruler (d) a pencil and tape
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) the same hook (c) time for 10 swings
36. 36.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it doubles (c) it halves (d) it stays the same
37. 37.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 40 seconds?
38. 38.🧺 Which of these is needed for the pendulum? (a) a string (b) a mirror (c) turmeric powder (d) a balloon
39. 39.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) it stops swinging (c) yes, much faster (d) yes, much slower
40. 40.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed

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