Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 292 · 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? What do we do with “the weight of the bob”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we change it (c) we keep it the same
3. 3.True or false: a balloon is not needed for the pendulum. (a) True (b) False
4. 4.⚖️ 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
5. 5.⚖️ 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) the string length (c) how far we pull it back (d) time for 10 swings
6. 6.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
7. 7.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a heavy brick (d) a small nut or washer
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is kept the same. (a) True (b) False
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a stopwatch (d) a battery cell
10. 10.True or false: a string is needed for the pendulum. (a) False (b) True
11. 11.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
13. 13.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) stopped (d) slower
14. 14.True or false: yeast is needed for the pendulum. (a) True (b) False
15. 15.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) the bob could hit you (d) it is magnetic
16. 16.🧺 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 magnet (d) a stopwatch
17. 17.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) it cannot swing (d) much slower
18. 18.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) it is more fun (c) 10 is a lucky number (d) it is more accurate
19. 19.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a longer string (c) a heavier bob (d) a shorter string
20. 20.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
21. 21.True or false: a mirror is needed for the pendulum. (a) True (b) False
22. 22.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a stopwatch (c) a pencil and tape (d) a string
24. 24.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much slower (c) it stops swinging (d) yes, much faster
25. 25.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
26. 26.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?
27. 27.🔮 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
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
29. 29.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
30. 30.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) a mirror (d) a stopwatch
31. 31.True or false: yeast is not needed for the pendulum. (a) False (b) True
32. 32.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
33. 33.⚖️ 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
34. 34.⚖️ 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
35. 35.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) a stopwatch (d) a battery cell
36. 36.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a grandfather clock (c) a phone (d) a digital watch
37. 37.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 17 seconds?
38. 38.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) turmeric powder (c) a magnet (d) a battery cell
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) the string length (c) time for 10 swings
40. 40.🧺 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 mirror

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