Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 669 · 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.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
2. 2.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a heavier bob (c) a lighter bob (d) a longer string
3. 3.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
4. 4.True or false: a ruler is not needed for the pendulum. (a) False (b) True
5. 5.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) True (b) False
7. 7.⚖️ 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
8. 8.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a string (d) turmeric powder
10. 10.🛟 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
11. 11.⚖️ 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
12. 12.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a sharp tool (c) a glass bottle (d) a heavy brick
13. 13.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the wind (c) magnetism (d) the string
14. 14.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) turmeric powder (d) a heavy nut or washer
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
16. 16.⚖️ 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
17. 17.⚖️ 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) True (b) False
18. 18.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a mirror (d) a ruler
20. 20.🧺 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 pencil and tape
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) the weight of the bob (c) the string length (d) how far we pull it back
22. 22.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) it stops swinging (c) yes, much slower (d) no, hardly at all
23. 23.True or false: yeast is needed for the pendulum. (a) True (b) False
24. 24.True or false: a balloon is needed for the pendulum. (a) True (b) False
25. 25.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
26. 26.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is kept the same. (a) True (b) False
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the weight of the bob (b) the string length (c) time for 10 swings (d) the same hook
28. 28.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
29. 29.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
30. 30.⚖️ 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
31. 31.⚖️ 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
32. 32.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
33. 33.🧺 Which of these is not needed for the pendulum? (a) a string (b) a mirror (c) a heavy nut or washer (d) a stopwatch
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a string (c) a ruler (d) a heavy nut or washer
35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a ruler (d) a balloon
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a stopwatch (d) yeast
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
38. 38.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
39. 39.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
40. 40.True or false: a magnet is not needed for the pendulum. (a) True (b) False

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