Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 82 · 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 takes 2 seconds for one swing. How many swings does it make in 30 seconds?
2. 2.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
3. 3.True or false: a string is needed for the pendulum. (a) True (b) False
4. 4.⚖️ 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 keep it the same (c) we change it
5. 5.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a stopwatch (c) a heavy nut or washer (d) a string
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a string (c) a stopwatch (d) a ruler
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.🕰️ 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
10. 10.🛟 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
11. 11.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
12. 12.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
13. 13.⚖️ 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 measure it (c) we keep it the same
14. 14.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) turmeric powder (d) a string
16. 16.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a shorter string (c) a longer string (d) a lighter bob
17. 17.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a string (c) a pencil and tape (d) a ruler
18. 18.⚖️ 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
19. 19.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a stopwatch (c) a heavy nut or washer (d) a pencil and tape
21. 21.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) it is wet (d) the bob could hit you
22. 22.⚖️ 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
23. 23.True or false: a magnet is needed for the pendulum. (a) True (b) False
24. 24.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
25. 25.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 28 seconds?
26. 26.True or false: a ruler is needed for the pendulum. (a) True (b) False
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) True (b) False
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the same hook (c) how far we pull it back (d) time for 10 swings
29. 29.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a phone (c) a digital watch (d) a sundial
30. 30.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) turmeric powder (c) a string (d) a ruler
31. 31.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) much slower (d) about the same
32. 32.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a balloon (c) a pencil and tape (d) a magnet
33. 33.⚖️ 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
34. 34.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
35. 35.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a ruler (d) a mirror
36. 36.⚖️ 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
37. 37.⚖️ 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
38. 38.⚖️ 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) True (b) False
39. 39.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
40. 40.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) slower (d) heavier

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