Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 668 · 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.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) stopped (d) heavier
2. 2.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a longer string (c) a heavier bob (d) a shorter string
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a balloon (c) a heavy nut or washer (d) a stopwatch
4. 4.⚖️ 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 change it (c) we measure it
5. 5.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a battery cell (c) a pencil and tape (d) a mirror
6. 6.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
7. 7.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) a heavy nut or washer (d) yeast
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) time for 10 swings (c) how far we pull it back (d) the same hook
9. 9.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
10. 10.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
11. 11.⚖️ 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
12. 12.⚖️ 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 weight of the bob (c) the string length (d) time for 10 swings
13. 13.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) the bob could hit you (d) it is wet
14. 14.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 14 seconds?
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.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
17. 17.⚖️ 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
18. 18.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) a mirror (d) a stopwatch
19. 19.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a phone (c) a sundial (d) a grandfather clock
20. 20.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
21. 21.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a heavy nut or washer (c) a string (d) a magnet
22. 22.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a magnet (d) a heavy nut or washer
24. 24.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
25. 25.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) yes, much faster (c) it stops swinging (d) no, hardly at all
26. 26.⚖️ 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
27. 27.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
28. 28.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the string (c) the wind (d) gravity
29. 29.🛟 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
30. 30.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) about the same (d) much slower
31. 31.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a string (c) a heavy nut or washer (d) a ruler
33. 33.⚖️ 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
34. 34.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
35. 35.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
36. 36.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
37. 37.True or false: yeast is not needed for the pendulum. (a) True (b) False
38. 38.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a stopwatch (c) a pencil and tape (d) a string
39. 39.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
40. 40.True or false: yeast is needed for the pendulum. (a) True (b) False

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