Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 808 · 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 magnet (b) yeast (c) a heavy nut or washer (d) turmeric powder
2. 2.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a shorter string (d) a longer string
3. 3.True or false: a ruler is needed for the pendulum. (a) False (b) True
4. 4.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a small nut or washer (d) a heavy brick
5. 5.True or false: a magnet is not needed for the pendulum. (a) True (b) False
6. 6.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) it is wet (d) the bob could hit you
7. 7.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a battery cell (d) a stopwatch
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) time for 10 swings (c) how far we pull it back (d) the same hook
9. 9.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
10. 10.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) a ruler (d) a mirror
11. 11.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a pencil and tape (c) a ruler (d) a heavy nut or washer
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
14. 14.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
15. 15.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
16. 16.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
17. 17.⚖️ 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
18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) the string length (c) time for 10 swings
19. 19.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
20. 20.⚖️ 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 change it (c) we keep it the same
21. 21.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
22. 22.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) it cannot swing (c) about the same (d) much slower
23. 23.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much faster (c) yes, much slower (d) no, hardly at all
24. 24.⚖️ 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
25. 25.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) a pencil and tape (d) yeast
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a string (d) a mirror
27. 27.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a sundial (c) a grandfather clock (d) a digital watch
28. 28.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) magnetism (c) the string (d) gravity
29. 29.True or false: yeast is needed for the pendulum. (a) False (b) True
30. 30.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) False (b) True
31. 31.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
32. 32.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
33. 33.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
34. 34.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
35. 35.⚖️ 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
36. 36.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a pencil and tape (c) a battery cell (d) a ruler
37. 37.⚖️ 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
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) False (b) True
39. 39.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
40. 40.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?

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