Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 976 · 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 needed for the pendulum? (a) a balloon (b) a battery cell (c) turmeric powder (d) a ruler
2. 2.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
3. 3.⚖️ 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 weight of the bob (d) the string length
4. 4.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) gravity (c) the string (d) magnetism
5. 5.⚖️ 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) False (b) True
6. 6.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
7. 7.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) about the same (c) it cannot swing (d) much faster
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a heavy nut or washer (c) a stopwatch (d) a string
9. 9.🔮 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 doubles (d) it halves
10. 10.⚖️ 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) the weight of the bob (c) the string length (d) time for 10 swings
11. 11.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) yes, much faster (c) no, hardly at all (d) it stops swinging
12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a balloon (d) a pencil and tape
13. 13.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
14. 14.True or false: a magnet is needed for the pendulum. (a) False (b) True
15. 15.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a pencil and tape (c) a magnet (d) a mirror
16. 16.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) a mirror (d) a stopwatch
17. 17.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
18. 18.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) stopped (d) slower
19. 19.🛟 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
20. 20.True or false: a ruler is needed for the pendulum. (a) True (b) False
21. 21.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a heavy nut or washer (d) yeast
22. 22.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
23. 23.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) the bob could hit you (d) it is hot
24. 24.⚖️ 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
25. 25.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) yeast (d) a ruler
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) False (b) True
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) True (b) False
29. 29.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a heavy nut or washer (c) a battery cell (d) a string
30. 30.True or false: a battery cell is needed for the pendulum. (a) False (b) True
31. 31.True or false: a string is not needed for the pendulum. (a) True (b) False
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a string (c) a pencil and tape (d) a stopwatch
33. 33.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we change it (b) we measure it (c) we keep it the same
35. 35.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) turmeric powder (d) a string
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) turmeric powder (c) a string (d) a stopwatch
37. 37.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) turmeric powder (d) a pencil and tape
38. 38.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
39. 39.⚖️ 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
40. 40.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed

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