Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 736 · 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? What do we do with “the same hook”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) a balloon (d) a string
3. 3.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a magnet (c) a battery cell (d) yeast
4. 4.⚖️ 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) True (b) False
5. 5.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) a pencil and tape (d) a battery cell
6. 6.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much faster (c) yes, much slower (d) it stops swinging
7. 7.🔮 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 becomes 4 times (d) it doubles
8. 8.🛟 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
9. 9.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a balloon (c) a magnet (d) yeast
10. 10.🛟 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
11. 11.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) turmeric powder (d) a string
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) the string length (c) time for 10 swings
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is the one thing we change. (a) False (b) True
14. 14.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
15. 15.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a longer string (c) a shorter string (d) a heavier bob
16. 16.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) heavier (d) stopped
17. 17.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
18. 18.🧺 Which of these is not needed for the pendulum? (a) a string (b) a balloon (c) a ruler (d) a pencil and tape
19. 19.⚖️ 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
20. 20.True or false: a balloon is not needed for the pendulum. (a) False (b) True
21. 21.⚖️ 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
22. 22.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) a pencil and tape (d) a magnet
23. 23.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
24. 24.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
25. 25.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
26. 26.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) yeast (d) a pencil and tape
27. 27.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
28. 28.True or false: a balloon is needed for the pendulum. (a) False (b) True
29. 29.⚖️ 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) how far we pull it back (c) the string length (d) time for 10 swings
30. 30.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
31. 31.True or false: a ruler is not needed for the pendulum. (a) False (b) True
32. 32.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
33. 33.🕰️ A pendulum makes 5 swings in 15 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 stopwatch (b) a magnet (c) a heavy nut or washer (d) a ruler
35. 35.True or false: a magnet is not needed for the pendulum. (a) False (b) True
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) time for 10 swings (c) how far we pull it back (d) the weight of the bob
38. 38.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) it cannot swing (c) much slower (d) about the same
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) True (b) False
40. 40.⚖️ 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

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