Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 274 · 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.⚖️ 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 same hook (c) how far we pull it back (d) the string length
2. 2.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
3. 3.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a heavy nut or washer (c) a string (d) a ruler
5. 5.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a string (c) a heavy nut or washer (d) a stopwatch
6. 6.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) stopped (d) heavier
7. 7.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is wet (d) it is hot
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
9. 9.True or false: a magnet is needed for the pendulum. (a) True (b) False
10. 10.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a shorter string (c) a longer string (d) a lighter bob
11. 11.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a heavy nut or washer (d) turmeric powder
13. 13.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a magnet (d) a pencil and tape
14. 14.🛟 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
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a battery cell (c) a heavy nut or washer (d) a pencil and tape
16. 16.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
17. 17.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) 10 is a lucky number (c) one swing is too slow (d) it is more accurate
18. 18.True or false: a balloon is needed for the pendulum. (a) True (b) False
19. 19.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a balloon (c) a ruler (d) a mirror
20. 20.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
21. 21.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a phone (c) a grandfather clock (d) a digital watch
22. 22.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a mirror (c) a stopwatch (d) a string
24. 24.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much slower (c) yes, much faster (d) no, hardly at all
25. 25.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) about the same (d) much slower
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a balloon (d) a ruler
27. 27.⚖️ 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 same hook (c) time for 10 swings (d) the string length
28. 28.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 14 seconds?
29. 29.⚖️ 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 weight of the bob (c) the string length
30. 30.🧺 Which of these is not needed for the pendulum? (a) a string (b) turmeric powder (c) a heavy nut or washer (d) a pencil and tape
31. 31.⚖️ 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 change it (b) we keep it the same (c) we measure it
32. 32.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) time for 10 swings (c) the string length
34. 34.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
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.⚖️ 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
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) True (b) False
38. 38.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it becomes 4 times (c) it halves (d) it doubles
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False

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