Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 637 · 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.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
2. 2.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a magnet (c) a balloon (d) a mirror
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) yeast (d) a string
4. 4.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a ruler (c) a mirror (d) a balloon
5. 5.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
6. 6.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
7. 7.⚖️ 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 keep it the same (c) we measure it
8. 8.🛟 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
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a string (c) a heavy nut or washer (d) a ruler
10. 10.⚖️ 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
11. 11.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
12. 12.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
13. 13.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings
15. 15.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
16. 16.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) gravity (c) the string (d) magnetism
17. 17.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 24 seconds?
18. 18.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
19. 19.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) it cannot swing (d) about the same
20. 20.⚖️ 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 measure it (b) we change it (c) we keep it the same
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a pencil and tape (c) a stopwatch (d) a ruler
23. 23.⚖️ 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
24. 24.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) it is more accurate (c) 10 is a lucky number (d) one swing is too slow
25. 25.🛟 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
26. 26.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it doubles (c) it becomes 4 times (d) it halves
27. 27.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) yeast (d) a pencil and tape
28. 28.⚖️ 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) how far we pull it back (c) the string length (d) time for 10 swings
29. 29.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) a battery cell (d) a pencil and tape
30. 30.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
31. 31.⚖️ 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 weight of the bob (c) the string length (d) time for 10 swings
32. 32.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a phone (c) a sundial (d) a digital watch
33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a mirror (c) a string (d) a stopwatch
34. 34.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
35. 35.🧺 Which of these is needed for the pendulum? (a) a string (b) a magnet (c) turmeric powder (d) yeast
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) a pencil and tape (d) a string
37. 37.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
38. 38.⚖️ 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
39. 39.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a heavy nut or washer (c) yeast (d) a balloon
40. 40.🕰️ 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

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