Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 709 · 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.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much slower (c) no, hardly at all (d) yes, much faster
2. 2.True or false: yeast is not needed for the pendulum. (a) False (b) True
3. 3.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a pencil and tape (c) a battery cell (d) yeast
4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is the one thing we change. (a) True (b) False
5. 5.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a mirror (c) a magnet (d) a stopwatch
6. 6.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a sharp tool (d) a small nut or washer
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.⚖️ 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 change it (c) we measure it
9. 9.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) stopped (d) heavier
10. 10.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
11. 11.⚖️ 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
12. 12.⚖️ 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
13. 13.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) about the same (d) much slower
14. 14.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
15. 15.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
16. 16.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
17. 17.⚖️ 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
18. 18.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
19. 19.True or false: a balloon is needed for the pendulum. (a) False (b) True
20. 20.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
21. 21.⚖️ 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
22. 22.⚖️ 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 keep it the same (c) we measure it
23. 23.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 42 seconds?
24. 24.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the same hook (c) the string length (d) the weight of the bob
26. 26.True or false: a mirror is needed for the pendulum. (a) True (b) False
27. 27.True or false: a magnet is needed for the pendulum. (a) False (b) True
28. 28.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a string (d) a balloon
30. 30.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a string (c) a mirror (d) a battery cell
31. 31.⚖️ 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
32. 32.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a heavier bob (c) a lighter bob (d) a shorter string
33. 33.⚖️ 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
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.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?
36. 36.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
37. 37.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) turmeric powder (d) a pencil and tape
39. 39.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a sundial (c) a phone (d) a digital watch
40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) a heavy nut or washer (d) a battery cell

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