Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 283 · 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 what we measure? (a) the weight of the bob (b) the string length (c) how far we pull it back (d) time for 10 swings
2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the same hook (b) how far we pull it back (c) the string length (d) the weight of the bob
3. 3.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) 10 is a lucky number (c) it is more fun (d) it is more accurate
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) yeast (c) a ruler (d) a stopwatch
5. 5.⚖️ 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
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.⚖️ 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) False (b) True
8. 8.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a longer string (c) a lighter bob (d) a shorter string
9. 9.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) slower (d) heavier
10. 10.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
11. 11.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a pencil and tape (d) a magnet
13. 13.True or false: yeast is not needed for the pendulum. (a) True (b) False
14. 14.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
15. 15.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a pencil and tape (c) a string (d) a mirror
16. 16.True or false: yeast is needed for the pendulum. (a) False (b) True
17. 17.⚖️ 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 measure it (c) we change it
18. 18.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it doubles (d) it becomes 4 times
19. 19.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
20. 20.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a heavy brick (d) a small nut or washer
21. 21.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 19 seconds?
22. 22.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
23. 23.⚖️ 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
24. 24.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
25. 25.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a string (d) a mirror
27. 27.⚖️ 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
28. 28.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a magnet (c) a battery cell (d) a balloon
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
31. 31.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
32. 32.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
33. 33.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
35. 35.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) no, hardly at all (c) yes, much faster (d) it stops swinging
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a balloon (d) a string
37. 37.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 14 seconds?
38. 38.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
39. 39.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a pencil and tape (c) turmeric powder (d) yeast
40. 40.⚖️ 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

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