Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 114 · 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? True or false: how far we pull it back is the one thing we change. (a) False (b) True
2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) the string length (c) time for 10 swings (d) the weight of the bob
3. 3.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
4. 4.True or false: yeast is not needed for the pendulum. (a) False (b) True
5. 5.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
6. 6.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a ruler (c) a balloon (d) yeast
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) time for 10 swings (c) the string length
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a pencil and tape (c) a stopwatch (d) a heavy nut or washer
9. 9.⚖️ 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) how far we pull it back (c) the string length (d) the weight of the bob
10. 10.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
11. 11.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 54 seconds?
12. 12.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
13. 13.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
14. 14.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
15. 15.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
16. 16.True or false: a ruler is needed for the pendulum. (a) True (b) False
17. 17.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
18. 18.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a sundial (c) a grandfather clock (d) a phone
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) a string (d) a pencil and tape
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a pencil and tape (d) a mirror
21. 21.🛟 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
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.⚖️ 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 measure it (c) we keep it the same
24. 24.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a balloon (c) a magnet (d) a string
25. 25.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) it is more accurate (c) one swing is too slow (d) 10 is a lucky number
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a heavy nut or washer (c) a magnet (d) a string
27. 27.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it halves (c) it becomes 4 times (d) it doubles
28. 28.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) magnetism (c) the string (d) the wind
29. 29.⚖️ 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
30. 30.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.True or false: a balloon is not needed for the pendulum. (a) True (b) False
33. 33.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
34. 34.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 14 seconds?
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
36. 36.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 11 seconds?
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a pencil and tape (d) yeast
38. 38.⚖️ 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
39. 39.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a lighter bob (d) a heavier bob
40. 40.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?

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