Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 281 · 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 what we measure? (a) how far we pull it back (b) the same hook (c) time for 10 swings (d) the string length
2. 2.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a string (c) a balloon (d) turmeric powder
3. 3.🕰️ 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
4. 4.⚖️ 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
5. 5.True or false: a balloon is not needed for the pendulum. (a) True (b) False
6. 6.🔮 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
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) yeast (d) a pencil and tape
8. 8.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a balloon (d) a ruler
9. 9.⚖️ 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 same hook (c) the string length
10. 10.🕰️ 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
11. 11.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
12. 12.True or false: a mirror is needed for the pendulum. (a) True (b) False
13. 13.🧺 Which of these is needed for the pendulum? (a) a mirror (b) turmeric powder (c) a ruler (d) a magnet
14. 14.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) it is wet (d) the bob could hit you
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a pencil and tape (d) a balloon
16. 16.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a small nut or washer (d) a sharp tool
17. 17.⚖️ 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
18. 18.True or false: a ruler is needed for the pendulum. (a) False (b) True
19. 19.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
20. 20.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) stopped (d) heavier
21. 21.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a mirror (c) a heavy nut or washer (d) a string
22. 22.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
23. 23.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it stays the same (c) it halves (d) it becomes 4 times
24. 24.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a shorter string (d) a longer string
25. 25.⚖️ 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) False (b) True
26. 26.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
27. 27.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
28. 28.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
29. 29.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
30. 30.⚖️ 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
31. 31.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
32. 32.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
33. 33.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
34. 34.⚖️ 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
35. 35.⚖️ 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
36. 36.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a phone (c) a digital watch (d) a sundial
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) the string length (c) time for 10 swings
38. 38.⚖️ 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 string length (c) the same hook (d) how far we pull it back
39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a pencil and tape (d) a mirror
40. 40.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a pencil and tape (c) a string (d) a stopwatch

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