Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 94 · 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) how far we pull it back (b) the same hook (c) the string length (d) the weight of the bob
2. 2.True or false: a ruler is not needed for the pendulum. (a) True (b) False
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a string (c) a pencil and tape (d) a stopwatch
4. 4.🧺 Which of these is needed for the pendulum? (a) yeast (b) a string (c) a mirror (d) a balloon
5. 5.True or false: a magnet is needed for the pendulum. (a) True (b) False
6. 6.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) a pencil and tape (d) turmeric powder
7. 7.⚖️ 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
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a ruler (d) yeast
9. 9.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much slower (c) much faster (d) about the same
10. 10.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) gravity (c) magnetism (d) the wind
11. 11.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) it is hot (d) the bob could hit you
12. 12.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it stays the same (c) it doubles (d) it halves
13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) turmeric powder (d) a stopwatch
14. 14.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a glass bottle (d) a sharp tool
15. 15.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a magnet (c) a string (d) a pencil and tape
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) time for 10 swings (c) the weight of the bob (d) the same hook
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a string (d) a magnet
18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) True (b) False
19. 19.⚖️ 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
20. 20.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a mirror (c) a string (d) a stopwatch
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 keep it the same (c) we change it
22. 22.⚖️ 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) False (b) True
23. 23.True or false: yeast is needed for the pendulum. (a) False (b) True
24. 24.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) stopped (c) quicker (d) heavier
25. 25.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
26. 26.⚖️ 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
27. 27.True or false: a mirror is not needed for the pendulum. (a) False (b) True
28. 28.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a balloon (c) a string (d) a stopwatch
29. 29.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a balloon (c) a magnet (d) a mirror
30. 30.🧺 Which of these is needed for the pendulum? (a) a mirror (b) yeast (c) a ruler (d) a magnet
31. 31.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
32. 32.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a lighter bob (d) a heavier bob
33. 33.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
34. 34.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
35. 35.⚖️ 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
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a battery cell (c) a ruler (d) a string
37. 37.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) it is more accurate (c) 10 is a lucky number (d) one swing is too slow
38. 38.⚖️ 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
39. 39.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 8 seconds?
40. 40.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?

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