Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 456 · 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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a pencil and tape (c) a string (d) a heavy nut or washer
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a heavy nut or washer (d) a mirror
3. 3.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a small nut or washer (c) a glass bottle (d) a heavy brick
4. 4.⚖️ 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
5. 5.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a heavier bob (c) a longer string (d) a lighter bob
6. 6.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) yeast (c) turmeric powder (d) a mirror
7. 7.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) stopped (c) heavier (d) quicker
8. 8.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) it stops swinging (c) no, hardly at all (d) yes, much faster
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a pencil and tape (c) a ruler (d) a stopwatch
10. 10.⚖️ 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
11. 11.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 18 seconds?
12. 12.⚖️ 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
13. 13.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) time for 10 swings (c) the string length
15. 15.⚖️ 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 string length (d) the same hook
16. 16.⚖️ 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 change it (c) we keep it the same
17. 17.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a stopwatch (c) a ruler (d) a heavy nut or washer
18. 18.⚖️ 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) True (b) False
19. 19.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it halves (c) it stays the same (d) it becomes 4 times
20. 20.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
21. 21.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is hot (d) it is wet
22. 22.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a battery cell (c) turmeric powder (d) yeast
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
24. 24.⚖️ 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
25. 25.True or false: a balloon is needed for the pendulum. (a) True (b) False
26. 26.⚖️ 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) False (b) True
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
28. 28.True or false: a string is not needed for the pendulum. (a) True (b) False
29. 29.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 40 seconds?
30. 30.True or false: a ruler is not needed for the pendulum. (a) False (b) True
31. 31.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
32. 32.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) much slower (d) it cannot swing
33. 33.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
34. 34.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) gravity (c) the wind (d) magnetism
35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a battery cell (c) a ruler (d) a stopwatch
36. 36.True or false: a string is needed for the pendulum. (a) False (b) True
37. 37.⚖️ 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
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 change it (b) we measure it (c) we keep it the same
39. 39.🧺 Which of these is needed for the pendulum? (a) a mirror (b) turmeric powder (c) a balloon (d) a string
40. 40.⚖️ 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) the string length (c) time for 10 swings (d) the same hook

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