Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 693 · 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.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
2. 2.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) the wind (d) gravity
3. 3.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a ruler (c) a string (d) a stopwatch
4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) time for 10 swings (c) how far we pull it back (d) the string length
5. 5.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
6. 6.⚖️ 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 change it (b) we keep it the same (c) we measure it
7. 7.⚖️ 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
8. 8.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
9. 9.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a pencil and tape (c) a magnet (d) a ruler
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) False (b) True
11. 11.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it halves (c) it doubles (d) it stays the same
12. 12.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) the bob could hit you (c) it is wet (d) it is magnetic
13. 13.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
14. 14.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
15. 15.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) heavier (d) stopped
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the weight of the bob (b) the same hook (c) time for 10 swings (d) the string length
17. 17.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a longer string (c) a heavier bob (d) a shorter string
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a heavy nut or washer (d) yeast
19. 19.⚖️ 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
20. 20.True or false: a string is needed for the pendulum. (a) True (b) False
21. 21.🔮 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
22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a ruler (c) a pencil and tape (d) a string
23. 23.⚖️ 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
24. 24.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
25. 25.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a stopwatch (c) a ruler (d) a string
26. 26.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
27. 27.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) it stops swinging (c) no, hardly at all (d) yes, much faster
28. 28.True or false: a ruler is needed for the pendulum. (a) True (b) False
29. 29.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
30. 30.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a string (c) a stopwatch (d) a ruler
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a battery cell (d) a heavy nut or washer
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) True (b) False
34. 34.⚖️ 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 measure it (c) we keep it the same
35. 35.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 30 seconds?
36. 36.🧺 Which of these is needed for the pendulum? (a) a string (b) a balloon (c) a mirror (d) a battery cell
37. 37.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a balloon (c) a pencil and tape (d) a battery cell
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a ruler (d) turmeric powder
39. 39.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
40. 40.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a grandfather clock (c) a phone (d) a sundial

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