Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 287 · 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? Which of these is kept the same? (a) time for 10 swings (b) the string length (c) how far we pull it back
2. 2.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is hot (d) it is wet
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) turmeric powder (d) a pencil and tape
4. 4.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
7. 7.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a digital watch (c) a grandfather clock (d) a sundial
8. 8.⚖️ 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) how far we pull it back (c) the same hook (d) the string length
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) yeast (c) a pencil and tape (d) a stopwatch
10. 10.⚖️ 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
11. 11.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) turmeric powder (c) a balloon (d) a heavy nut or washer
12. 12.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) a string (d) yeast
13. 13.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 9 seconds?
14. 14.⚖️ 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) False (b) True
15. 15.🛟 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
16. 16.True or false: a ruler is not needed for the pendulum. (a) False (b) True
17. 17.⚖️ 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 string length (c) time for 10 swings (d) the weight of the bob
18. 18.⚖️ 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
19. 19.⚖️ 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
20. 20.⚖️ 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
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
22. 22.⚖️ 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
23. 23.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a lighter bob (d) a heavier bob
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
25. 25.True or false: a stopwatch is not 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: the weight of the bob is what we measure. (a) False (b) True
27. 27.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) it stops swinging (c) no, hardly at all (d) yes, much slower
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is the one thing we change. (a) False (b) True
29. 29.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
30. 30.🧺 Which of these is needed for the pendulum? (a) a magnet (b) turmeric powder (c) a ruler (d) a balloon
31. 31.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a magnet (d) a stopwatch
32. 32.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) the string (c) magnetism (d) gravity
33. 33.True or false: a string is needed for the pendulum. (a) False (b) True
34. 34.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 8 seconds?
35. 35.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a pencil and tape (c) a ruler (d) a string
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) False (b) True
37. 37.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
38. 38.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) stopped (d) quicker
39. 39.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a stopwatch (c) yeast (d) turmeric powder
40. 40.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 20 seconds?

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