Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 805 · 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.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a glass bottle (d) a sharp tool
2. 2.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) the wind (c) gravity (d) magnetism
3. 3.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) how far we pull it back (c) the string length
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
6. 6.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
7. 7.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
8. 8.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
9. 9.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
10. 10.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
11. 11.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more accurate (c) it is more fun (d) one swing is too slow
12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a heavy nut or washer (d) yeast
13. 13.⚖️ 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) time for 10 swings (c) how far we pull it back (d) the string length
14. 14.⚖️ 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) True (b) False
15. 15.🧺 Which of these is needed for the pendulum? (a) yeast (b) a balloon (c) a magnet (d) a string
16. 16.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it stays the same (c) it becomes 4 times (d) it halves
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) turmeric powder (d) a pencil and tape
18. 18.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
19. 19.⚖️ 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) False (b) True
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) no, hardly at all (c) yes, much faster (d) yes, much slower
22. 22.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
23. 23.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
24. 24.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a mirror (c) a balloon (d) a battery cell
25. 25.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) it is magnetic (d) the bob could hit you
26. 26.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a battery cell (c) a magnet (d) a stopwatch
28. 28.True or false: a magnet is needed for the pendulum. (a) False (b) True
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a mirror (d) a stopwatch
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a balloon (d) a stopwatch
31. 31.⚖️ 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 weight of the bob (c) the same hook (d) time for 10 swings
32. 32.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?
33. 33.True or false: a string is needed for the pendulum. (a) False (b) True
34. 34.True or false: a pencil and tape 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 string length”? (a) we measure it (b) we keep it the same (c) we change it
36. 36.True or false: a mirror is needed for the pendulum. (a) True (b) False
37. 37.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a battery cell (c) a stopwatch (d) a pencil and tape
38. 38.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) the weight of the bob
40. 40.True or false: a ruler is needed for the pendulum. (a) False (b) True

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