Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 165 · 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.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) a battery cell (d) a ruler
2. 2.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) yeast (d) a heavy nut or washer
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) turmeric powder (d) a string
4. 4.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
5. 5.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) quicker (d) slower
6. 6.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
7. 7.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
8. 8.⚖️ 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 keep it the same (c) we measure it
9. 9.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a shorter string (c) a lighter bob (d) a longer string
10. 10.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a small nut or washer (c) a heavy brick (d) a glass bottle
11. 11.⚖️ 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
12. 12.True or false: yeast is not needed for the pendulum. (a) True (b) False
13. 13.True or false: a balloon is not needed for the pendulum. (a) False (b) True
14. 14.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
15. 15.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
16. 16.⚖️ 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) the string length (c) the weight of the bob (d) how far we pull it back
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a battery cell (c) a string (d) a pencil and tape
18. 18.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) it is magnetic (d) the bob could hit you
19. 19.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
20. 20.True or false: a string is needed for the pendulum. (a) True (b) False
21. 21.⚖️ 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 change it (c) we keep it the same
22. 22.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) it is more fun (c) 10 is a lucky number (d) it is more accurate
23. 23.🧺 Which of these is needed for the pendulum? (a) a ruler (b) yeast (c) turmeric powder (d) a magnet
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) how far we pull it back (c) the string length (d) the weight of the bob
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a mirror (d) a heavy nut or washer
26. 26.True or false: a balloon is needed for the pendulum. (a) True (b) False
27. 27.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) a magnet (d) a pencil and tape
30. 30.⚖️ 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 keep it the same (c) we change it
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.⚖️ 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 measure it (c) we keep it the same
33. 33.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a string (d) yeast
35. 35.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) a stopwatch (d) turmeric powder
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) True (b) False
37. 37.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a string (c) a magnet (d) a battery cell
38. 38.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
39. 39.True or false: a magnet is not needed for the pendulum. (a) True (b) False
40. 40.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True

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