Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 332 · 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? True or false: the string length is the one thing we change. (a) True (b) False
2. 2.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
3. 3.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a sharp tool (d) a small nut or washer
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a heavy nut or washer (c) a string (d) a pencil and tape
5. 5.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) slower (d) stopped
6. 6.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
7. 7.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 40 seconds?
8. 8.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
9. 9.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) about the same (c) much faster (d) it cannot swing
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
11. 11.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
12. 12.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the string (c) the wind (d) gravity
13. 13.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a mirror (c) turmeric powder (d) a ruler
14. 14.⚖️ 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
15. 15.⚖️ 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
16. 16.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
17. 17.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
18. 18.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a balloon (c) a pencil and tape (d) a magnet
19. 19.True or false: a ruler is not needed for the pendulum. (a) False (b) True
20. 20.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much faster (c) it stops swinging (d) yes, much slower
21. 21.⚖️ 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
22. 22.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a magnet (c) a heavy nut or washer (d) a balloon
23. 23.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a string (c) a heavy nut or washer (d) a stopwatch
24. 24.⚖️ 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
25. 25.⚖️ 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) how far we pull it back
26. 26.True or false: a string is not needed for the pendulum. (a) False (b) True
27. 27.⚖️ 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
28. 28.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
29. 29.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
30. 30.⚖️ 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
31. 31.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) it is magnetic (d) the bob could hit you
32. 32.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
33. 33.⚖️ 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
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a heavy nut or washer (c) a stopwatch (d) a battery cell
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
37. 37.True or false: a magnet is needed for the pendulum. (a) True (b) False
38. 38.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
39. 39.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a magnet (c) a pencil and tape (d) a heavy nut or washer

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