Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 484 · 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.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a balloon (d) a stopwatch
2. 2.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
3. 3.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
4. 4.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a phone (c) a digital watch (d) a grandfather clock
5. 5.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) gravity (c) magnetism (d) the string
6. 6.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a small nut or washer (d) a sharp tool
7. 7.🧺 Which of these is needed for the pendulum? (a) yeast (b) a magnet (c) a ruler (d) a mirror
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) the string length (c) the same hook
9. 9.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) it cannot swing (c) about the same (d) much faster
10. 10.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 54 seconds?
11. 11.⚖️ 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) how far we pull it back (c) the string length (d) the weight of the bob
12. 12.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
13. 13.⚖️ 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 weight of the bob
14. 14.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is hot (d) it is magnetic
15. 15.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
16. 16.🧺 Which of these is needed for the pendulum? (a) yeast (b) a battery cell (c) a mirror (d) a pencil and tape
17. 17.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much faster (c) no, hardly at all (d) yes, much slower
18. 18.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
19. 19.⚖️ 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
20. 20.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
21. 21.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
22. 22.True or false: a string is not needed for the pendulum. (a) True (b) False
23. 23.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
24. 24.True or false: a string is needed for the pendulum. (a) True (b) False
25. 25.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a battery cell (c) a stopwatch (d) a mirror
26. 26.⚖️ 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
27. 27.⚖️ 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
28. 28.🧺 Which of these is needed for the pendulum? (a) a string (b) a magnet (c) turmeric powder (d) a balloon
29. 29.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
30. 30.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) slower (d) stopped
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
32. 32.⚖️ 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
33. 33.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it becomes 4 times (c) it halves (d) it doubles
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a mirror (d) a pencil and tape
35. 35.⚖️ 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
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a string (d) a battery cell
37. 37.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 16 seconds?
38. 38.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a mirror (c) a heavy nut or washer (d) a balloon
39. 39.True or false: a balloon is not 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 pencil and tape (b) a balloon (c) a heavy nut or washer (d) a stopwatch

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