Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 699 · 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 string length”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
3. 3.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
5. 5.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a grandfather clock (c) a phone (d) a digital watch
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a balloon (c) a stopwatch (d) a string
7. 7.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
8. 8.True or false: yeast is needed for the pendulum. (a) True (b) False
9. 9.⚖️ 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) time for 10 swings (d) the weight of the bob
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) the string length (c) time for 10 swings
11. 11.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a string (c) turmeric powder (d) yeast
12. 12.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
13. 13.True or false: a magnet is needed for the pendulum. (a) True (b) False
14. 14.True or false: a string is not needed for the pendulum. (a) False (b) True
15. 15.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a magnet (d) a heavy nut or washer
16. 16.🛟 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
17. 17.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a battery cell (d) a ruler
18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
20. 20.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 20 seconds?
21. 21.⚖️ 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
22. 22.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
23. 23.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
24. 24.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
25. 25.⚖️ 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) time for 10 swings (c) the string length
26. 26.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) the bob could hit you (c) it is hot (d) it is wet
27. 27.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) it cannot swing (c) much slower (d) about the same
28. 28.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) it stops swinging (c) yes, much faster (d) no, hardly at all
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a battery cell (c) a stopwatch (d) a ruler
30. 30.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
31. 31.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a mirror (d) a pencil and tape
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a magnet (d) a pencil and tape
33. 33.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) quicker (d) slower
34. 34.⚖️ 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
35. 35.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) turmeric powder (d) a pencil and tape
36. 36.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) yeast (c) a heavy nut or washer (d) a stopwatch
38. 38.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
39. 39.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True

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