Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 932 · 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) how far we pull it back (b) time for 10 swings (c) the same hook (d) the string length
2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we keep it the same (c) we measure it
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) False (b) True
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a stopwatch (d) a magnet
5. 5.🛟 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
6. 6.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
7. 7.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) stopped (d) slower
8. 8.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a battery cell (c) a stopwatch (d) a string
9. 9.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
10. 10.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) a string (d) a balloon
11. 11.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
12. 12.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
13. 13.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
14. 14.True or false: a battery cell is needed for the pendulum. (a) False (b) True
15. 15.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a stopwatch (c) a balloon (d) a magnet
16. 16.🧺 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 ruler
17. 17.True or false: a ruler is needed for the pendulum. (a) False (b) True
18. 18.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) yeast (d) a stopwatch
19. 19.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
20. 20.True or false: a mirror is needed for the pendulum. (a) True (b) False
21. 21.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
22. 22.🧺 Which of these is needed for the pendulum? (a) a magnet (b) yeast (c) a balloon (d) a heavy nut or washer
23. 23.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 24 seconds?
24. 24.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the wind (c) magnetism (d) the string
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) yeast (c) a string (d) a ruler
26. 26.True or false: a magnet is needed for the pendulum. (a) True (b) False
27. 27.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a pencil and tape (c) a ruler (d) a mirror
28. 28.⚖️ 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
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) the string length (c) time for 10 swings
30. 30.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) it cannot swing (d) much faster
31. 31.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a shorter string (c) a longer string (d) a lighter bob
32. 32.⚖️ 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) time for 10 swings (c) how far we pull it back (d) the string length
33. 33.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
34. 34.🧺 Which of these is needed for the pendulum? (a) yeast (b) a balloon (c) a string (d) a mirror
35. 35.⚖️ 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
36. 36.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
37. 37.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a ruler (c) a magnet (d) a stopwatch
38. 38.⚖️ 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
39. 39.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
40. 40.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) one swing is too slow (c) 10 is a lucky number (d) it is more fun

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