Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 76 · 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.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) yeast (d) a pencil and tape
2. 2.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a glass bottle (d) a sharp tool
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) yeast (c) a stopwatch (d) a string
4. 4.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
5. 5.🧺 Which of these is needed for the pendulum? (a) a string (b) turmeric powder (c) a mirror (d) yeast
6. 6.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
7. 7.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) stopped (d) slower
8. 8.⚖️ 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
9. 9.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) the string length (c) time for 10 swings
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a heavy nut or washer (c) a ruler (d) a string
12. 12.True or false: a magnet is needed for the pendulum. (a) True (b) False
13. 13.⚖️ 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
14. 14.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we change it (c) we measure it
16. 16.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is the one thing we change. (a) False (b) True
18. 18.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is wet (c) it is magnetic (d) it is hot
19. 19.True or false: yeast is needed for the pendulum. (a) False (b) True
20. 20.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a pencil and tape (c) yeast (d) a mirror
21. 21.⚖️ 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) the same hook (d) how far we pull it back
22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a pencil and tape (c) a string (d) a stopwatch
23. 23.⚖️ 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
24. 24.⚖️ 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 measure it (c) we change it
25. 25.⚖️ 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) the string length (c) how far we pull it back (d) the weight of the bob
26. 26.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
27. 27.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a battery cell (c) a string (d) a heavy nut or washer
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) True (b) False
29. 29.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
30. 30.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a string (c) a heavy nut or washer (d) a ruler
32. 32.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) the string (c) gravity (d) magnetism
33. 33.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a lighter bob (c) a longer string (d) a heavier bob
34. 34.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
35. 35.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
36. 36.⚖️ 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
37. 37.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a stopwatch (c) a heavy nut or washer (d) a ruler
38. 38.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it becomes 4 times (c) it halves (d) it doubles
39. 39.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
40. 40.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much faster (c) it stops swinging (d) yes, much slower

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