Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 266 · 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 stopwatch for the pendulum? (a) not needed (b) needed
2. 2.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
3. 3.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) it cannot swing (d) much slower
4. 4.🛟 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
5. 5.⚖️ 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) the string length (c) how far we pull it back (d) time for 10 swings
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a battery cell (c) a stopwatch (d) a string
7. 7.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a string (d) a mirror
9. 9.⚖️ 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
10. 10.⚖️ 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
11. 11.⚖️ 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
12. 12.⚖️ 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
13. 13.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the string (c) the wind (d) magnetism
14. 14.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) True (b) False
16. 16.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
17. 17.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a magnet (c) a mirror (d) a battery cell
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a magnet (c) a string (d) a pencil and tape
19. 19.⚖️ 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
20. 20.⚖️ 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) how far we pull it back (c) the string length (d) time for 10 swings
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is kept the same. (a) False (b) True
22. 22.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
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) False (b) True
24. 24.⚖️ 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
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) the weight of the bob
26. 26.⚖️ 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
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a string (c) a pencil and tape (d) a heavy nut or washer
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
30. 30.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
31. 31.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
32. 32.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is magnetic (c) it is hot (d) the bob could hit you
33. 33.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) a ruler (d) a battery cell
34. 34.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 36 seconds?
35. 35.🧺 Do we need a mirror 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: how far we pull it back is the one thing we change. (a) True (b) False
37. 37.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) stopped (d) quicker
38. 38.🧺 Which of these is needed for the pendulum? (a) a mirror (b) yeast (c) a magnet (d) a ruler
39. 39.True or false: a magnet is not needed for the pendulum. (a) False (b) True
40. 40.True or false: a battery cell is needed for the pendulum. (a) False (b) True

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