Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 966 · 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) a string (b) a heavy nut or washer (c) a battery cell (d) a ruler
2. 2.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it halves (c) it doubles (d) it stays the same
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
5. 5.🧺 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 battery cell
6. 6.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) gravity (d) the wind
7. 7.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a shorter string (c) a longer string (d) a lighter bob
8. 8.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) it is wet (d) the bob could hit you
9. 9.🛟 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
10. 10.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a magnet (d) a pencil and tape
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) how far we pull it back (c) the same hook (d) time for 10 swings
12. 12.⚖️ 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 change it (c) we measure it
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) the weight of the bob
14. 14.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a stopwatch (c) a pencil and tape (d) a balloon
15. 15.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
16. 16.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
17. 17.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) yes, much faster (c) it stops swinging (d) no, hardly at all
18. 18.True or false: yeast is needed for the pendulum. (a) False (b) True
19. 19.True or false: a string is not needed for the pendulum. (a) False (b) True
20. 20.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
21. 21.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
22. 22.⚖️ 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
23. 23.⚖️ 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
24. 24.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) stopped (d) heavier
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a pencil and tape (d) a mirror
26. 26.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
27. 27.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a pencil and tape (d) yeast
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a heavy nut or washer (c) a pencil and tape (d) a ruler
29. 29.⚖️ 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
30. 30.🔮 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
31. 31.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
32. 32.True or false: a ruler is not needed for the pendulum. (a) False (b) True
33. 33.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a string (c) a mirror (d) yeast
34. 34.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
35. 35.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a mirror (c) a magnet (d) a ruler
36. 36.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 17 seconds?
37. 37.⚖️ 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
38. 38.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
39. 39.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a stopwatch (c) a balloon (d) a magnet
40. 40.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a magnet (c) a battery cell (d) a heavy nut or washer

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