Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 597 · 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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a battery cell (d) a stopwatch
2. 2.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
3. 3.⚖️ 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 string length (c) the weight of the bob
4. 4.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
5. 5.⚖️ 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) False (b) True
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a mirror (c) a stopwatch (d) a string
7. 7.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) yeast (c) a magnet (d) a pencil and tape
8. 8.True or false: a string is not needed for the pendulum. (a) False (b) True
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a string (c) a pencil and tape (d) a heavy nut or washer
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 54 seconds?
12. 12.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) turmeric powder (d) a stopwatch
13. 13.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
14. 14.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a grandfather clock (c) a digital watch (d) a phone
15. 15.True or false: a string is needed for the pendulum. (a) True (b) False
16. 16.⚖️ 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
17. 17.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is magnetic (d) it is hot
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) a balloon (d) a string
19. 19.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
20. 20.⚖️ 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
21. 21.True or false: a mirror is needed for the pendulum. (a) True (b) False
22. 22.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a sharp tool (d) a glass bottle
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
24. 24.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a heavy nut or washer (c) yeast (d) a battery cell
25. 25.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
26. 26.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 21 seconds?
28. 28.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a ruler (c) a magnet (d) a battery cell
29. 29.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 14 seconds?
30. 30.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
31. 31.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) slower (d) quicker
32. 32.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 42 seconds?
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a stopwatch (d) turmeric powder
36. 36.True or false: a battery cell is needed for the pendulum. (a) True (b) False
37. 37.🧺 Which of these is needed for the pendulum? (a) yeast (b) a battery cell (c) turmeric powder (d) a string
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
39. 39.⚖️ 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
40. 40.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a balloon (c) a battery cell (d) a magnet

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