Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 518 · 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.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a ruler (d) a balloon
2. 2.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a stopwatch (c) yeast (d) a battery cell
3. 3.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
4. 4.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
5. 5.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a string (d) a balloon
6. 6.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
7. 7.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a heavy brick (c) a glass bottle (d) a small nut or washer
8. 8.🛟 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
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) True (b) False
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 measure it (b) we change it (c) we keep it the same
11. 11.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it halves (c) it becomes 4 times (d) it stays the same
12. 12.True or false: a string is needed for the pendulum. (a) False (b) True
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the string length (c) the same hook (d) the weight of the bob
14. 14.🕰️ 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
15. 15.True or false: a battery cell is needed for the pendulum. (a) True (b) False
16. 16.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a balloon (c) a pencil and tape (d) a battery cell
17. 17.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
18. 18.⚖️ 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 change it (c) we keep it the same
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we keep it the same (c) we measure it
20. 20.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) turmeric powder (c) a heavy nut or washer (d) a ruler
22. 22.True or false: a balloon is not needed for the pendulum. (a) False (b) True
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a mirror (c) a pencil and tape (d) a ruler
24. 24.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 42 seconds?
25. 25.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) yes, much slower (c) no, hardly at all (d) it stops swinging
26. 26.⚖️ 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
27. 27.⚖️ 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
28. 28.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 13 seconds?
29. 29.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a grandfather clock (c) a sundial (d) a phone
30. 30.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
31. 31.True or false: yeast is needed for the pendulum. (a) False (b) True
32. 32.⚖️ 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
33. 33.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) quicker (d) slower
34. 34.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
35. 35.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
36. 36.⚖️ 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 weight of the bob
37. 37.🕰️ A pendulum makes 15 swings in 15 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 string length is the one thing we change. (a) True (b) False
39. 39.True or false: a ruler is not needed for the pendulum. (a) False (b) True
40. 40.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True

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