Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 372 · 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.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
2. 2.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 8 seconds?
3. 3.🕰️ 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
4. 4.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a mirror (d) a ruler
6. 6.🛟 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
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) turmeric powder (c) a pencil and tape (d) a ruler
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a ruler (d) a battery cell
9. 9.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a heavy nut or washer (c) a pencil and tape (d) a ruler
10. 10.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a string (d) a balloon
11. 11.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) slower (c) heavier (d) quicker
12. 12.🧺 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) yeast
13. 13.⚖️ 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 keep it the same (c) we change it
14. 14.⚖️ 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
15. 15.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
16. 16.⚖️ 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
17. 17.⚖️ 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
18. 18.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a pencil and tape (c) a ruler (d) a heavy nut or washer
19. 19.True or false: a magnet is not needed for the pendulum. (a) True (b) False
20. 20.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a magnet (d) a stopwatch
21. 21.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
22. 22.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
25. 25.⚖️ 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
26. 26.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 20 seconds?
27. 27.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
28. 28.⚖️ 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) False (b) True
29. 29.⚖️ 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
30. 30.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
31. 31.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a heavy nut or washer (c) a ruler (d) a string
32. 32.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a glass bottle (c) a heavy brick (d) a sharp tool
33. 33.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
34. 34.⚖️ 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
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
36. 36.⚖️ 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
37. 37.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) the string length (c) how far we pull it back (d) time for 10 swings
39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a magnet (d) a pencil and tape
40. 40.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a ruler (c) a string (d) a heavy nut or washer

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