Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 338 · 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.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a battery cell (c) a heavy nut or washer (d) a string
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) yeast (d) a string
4. 4.🧺 Which of these is not needed for the pendulum? (a) a string (b) a battery cell (c) a heavy nut or washer (d) a pencil and tape
5. 5.⚖️ 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 keep it the same (b) we change it (c) we measure it
6. 6.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) stopped (d) slower
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.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a digital watch (c) a grandfather clock (d) a phone
9. 9.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a stopwatch (d) a mirror
10. 10.⚖️ 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 measure it (c) we change it
11. 11.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 17 seconds?
12. 12.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a mirror (c) turmeric powder (d) a battery cell
13. 13.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a magnet (c) a heavy nut or washer (d) a stopwatch
14. 14.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) yeast (d) a pencil and tape
15. 15.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
16. 16.⚖️ 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 keep it the same (c) we change it
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.⚖️ 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) True (b) False
19. 19.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) about the same (c) much faster (d) it cannot swing
20. 20.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it doubles (c) it becomes 4 times (d) it halves
21. 21.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
22. 22.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a pencil and tape (c) a balloon (d) a heavy nut or washer
23. 23.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 48 seconds?
24. 24.True or false: a ruler is needed for the pendulum. (a) True (b) False
25. 25.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a glass bottle (c) a heavy brick (d) a sharp tool
26. 26.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more fun (c) it is more accurate (d) one swing is too slow
27. 27.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) yes, much slower (c) it stops swinging (d) no, hardly at all
28. 28.⚖️ 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
29. 29.🧺 Which of these is needed for the pendulum? (a) a string (b) a balloon (c) a magnet (d) a mirror
30. 30.⚖️ 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
31. 31.True or false: a string is not needed for the pendulum. (a) False (b) True
32. 32.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
33. 33.⚖️ 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 keep it the same (c) we measure it
34. 34.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 54 seconds?
35. 35.⚖️ 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
36. 36.⚖️ 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) time for 10 swings
37. 37.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 18 seconds?
38. 38.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 36 seconds?
39. 39.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
40. 40.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?

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