Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 66 · 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.🔮 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 doubles (d) it halves
2. 2.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) slower (d) heavier
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) the same hook (c) time for 10 swings
4. 4.⚖️ 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
5. 5.🧺 Do we need a mirror 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 “time for 10 swings”? (a) we measure it (b) we keep it the same (c) we change it
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a ruler (c) a heavy nut or washer (d) a pencil and tape
8. 8.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) a magnet (d) a heavy nut or washer
9. 9.True or false: a string is not needed for the pendulum. (a) False (b) True
10. 10.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a heavy nut or washer (c) a mirror (d) a balloon
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) how far we pull it back (c) time for 10 swings (d) the same hook
12. 12.⚖️ 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 measure it (b) we change it (c) we keep it the same
13. 13.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
14. 14.⚖️ 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
15. 15.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 33 seconds?
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
17. 17.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
18. 18.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a balloon (c) a stopwatch (d) a heavy nut or washer
20. 20.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a heavier bob (c) a lighter bob (d) a longer string
21. 21.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a heavy nut or washer (c) turmeric powder (d) a pencil and tape
22. 22.⚖️ 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
23. 23.🧺 Which of these is needed for the pendulum? (a) a magnet (b) turmeric powder (c) a string (d) a mirror
24. 24.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 8 seconds?
25. 25.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 12 seconds?
26. 26.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a sharp tool (d) a small nut or washer
27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a stopwatch (d) a mirror
28. 28.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) yeast (d) a pencil and tape
29. 29.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
30. 30.🧺 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 ruler (d) yeast
31. 31.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
32. 32.True or false: a magnet is needed for the pendulum. (a) True (b) False
33. 33.⚖️ 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
34. 34.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 48 seconds?
35. 35.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a balloon (c) a ruler (d) yeast
36. 36.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the string (c) the wind (d) gravity
37. 37.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) much faster (d) it cannot swing
38. 38.⚖️ 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) True (b) False
39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a string (d) a battery cell
40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a ruler (d) turmeric powder

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