Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 873 · 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 needed for the pendulum. (a) True (b) False
2. 2.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the string length (b) the same hook (c) the weight of the bob (d) time for 10 swings
4. 4.⚖️ 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 same hook
5. 5.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
6. 6.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
7. 7.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) the bob could hit you (d) it is hot
8. 8.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a ruler (d) a battery cell
9. 9.🧺 Which of these is needed for the pendulum? (a) a magnet (b) yeast (c) turmeric powder (d) a pencil and tape
10. 10.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
11. 11.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a small nut or washer (d) a heavy brick
12. 12.⚖️ 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
13. 13.🧺 Which of these is needed for the pendulum? (a) yeast (b) a string (c) a magnet (d) a mirror
14. 14.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a phone (c) a digital watch (d) a grandfather clock
15. 15.⚖️ 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
16. 16.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a string (d) turmeric powder
17. 17.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a stopwatch (c) a mirror (d) a string
18. 18.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) one swing is too slow (c) it is more accurate (d) 10 is a lucky number
19. 19.⚖️ 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
20. 20.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a shorter string (c) a longer string (d) a heavier bob
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 measure it (c) we change it
22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) turmeric powder (d) a ruler
23. 23.⚖️ 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
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a string (d) a mirror
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) time for 10 swings (c) the same hook (d) the string length
26. 26.⚖️ 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
27. 27.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 36 seconds?
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) False (b) True
29. 29.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a magnet (d) a string
31. 31.⚖️ 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 keep it the same (c) we change it
32. 32.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
33. 33.⚖️ 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
34. 34.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
35. 35.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 11 seconds?
36. 36.🧺 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 pencil and tape
37. 37.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) no, hardly at all (c) yes, much slower (d) yes, much faster
38. 38.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 48 seconds?
39. 39.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
40. 40.True or false: a string is not needed for the pendulum. (a) True (b) False

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