Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 596 · 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 the one thing we change? (a) time for 10 swings (b) the weight of the bob (c) the string length (d) how far we pull it back
2. 2.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
3. 3.⚖️ 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
4. 4.True or false: a magnet is needed for the pendulum. (a) True (b) False
5. 5.⚖️ 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
6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) how far we pull it back (c) time for 10 swings (d) the string length
7. 7.True or false: yeast is needed for the pendulum. (a) False (b) True
8. 8.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a shorter string (d) a longer string
9. 9.⚖️ 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
10. 10.🧺 Which of these is needed for the pendulum? (a) yeast (b) a balloon (c) a stopwatch (d) a magnet
11. 11.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a balloon (c) yeast (d) turmeric powder
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) the string length (c) how far we pull it back
13. 13.🧺 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 magnet
14. 14.⚖️ 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
15. 15.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it doubles (c) it stays the same (d) it halves
16. 16.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) the bob could hit you (d) it is wet
17. 17.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
18. 18.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) gravity (d) the wind
19. 19.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a stopwatch (d) a mirror
20. 20.⚖️ 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) True (b) False
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a ruler (c) a stopwatch (d) a heavy nut or washer
22. 22.⚖️ 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) the same hook
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) it cannot swing (d) about the same
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) turmeric powder (c) a stopwatch (d) a heavy nut or washer
26. 26.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a mirror (c) a balloon (d) a string
27. 27.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
28. 28.⚖️ 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
29. 29.True or false: a balloon is not needed for the pendulum. (a) False (b) True
30. 30.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a sundial (c) a phone (d) a grandfather clock
31. 31.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
32. 32.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a sharp tool (d) a small nut or washer
33. 33.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
34. 34.⚖️ 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
35. 35.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 36 seconds?
36. 36.⚖️ 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
37. 37.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) slower (d) stopped
38. 38.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
39. 39.⚖️ 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) the weight of the bob
40. 40.True or false: a string is needed for the pendulum. (a) False (b) True

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