Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 103 · 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) time for 10 swings (b) the weight of the bob (c) the string length (d) how far we pull it back
2. 2.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
3. 3.⚖️ 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) time for 10 swings (c) the string length
4. 4.🔮 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
5. 5.🧺 Which of these is needed for the pendulum? (a) a string (b) a balloon (c) a battery cell (d) yeast
6. 6.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
7. 7.⚖️ 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
8. 8.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much slower (c) no, hardly at all (d) yes, much faster
9. 9.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) 10 is a lucky number (c) one swing is too slow (d) it is more accurate
10. 10.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a stopwatch (d) yeast
12. 12.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) a stopwatch (d) a magnet
13. 13.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we measure it (c) we keep it the same
15. 15.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a mirror (c) a string (d) a pencil and tape
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a magnet (d) a stopwatch
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a mirror (d) a stopwatch
18. 18.⚖️ 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
19. 19.True or false: a string is needed for the pendulum. (a) True (b) False
20. 20.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) turmeric powder (d) a ruler
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) False (b) True
22. 22.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a ruler (c) a heavy nut or washer (d) a balloon
23. 23.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
24. 24.⚖️ 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
25. 25.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) gravity (c) magnetism (d) the wind
26. 26.⚖️ 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) True (b) False
27. 27.True or false: a ruler is not needed for the pendulum. (a) True (b) False
28. 28.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) yeast (c) a balloon (d) a battery cell
29. 29.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) about the same (d) much slower
30. 30.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) stopped (c) quicker (d) heavier
31. 31.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a sharp tool (d) a glass bottle
32. 32.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
33. 33.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
34. 34.⚖️ 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
35. 35.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) a string (d) a battery cell
36. 36.True or false: a string is not needed for the pendulum. (a) False (b) True
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) a stopwatch (d) a string
38. 38.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
39. 39.⚖️ 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) time for 10 swings (d) how far we pull it back
40. 40.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 36 seconds?

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