Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 45 · 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.True or false: a balloon is needed for the pendulum. (a) False (b) True
2. 2.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) False (b) True
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) yeast (d) a pencil and tape
5. 5.⚖️ 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
6. 6.🛟 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
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a balloon (d) a string
8. 8.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a balloon (c) a battery cell (d) a heavy nut or washer
9. 9.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a longer string (d) a shorter string
10. 10.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a ruler (c) a stopwatch (d) a magnet
11. 11.🧺 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) a battery cell
12. 12.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the string (c) the wind (d) magnetism
13. 13.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a mirror (c) turmeric powder (d) a balloon
14. 14.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) stopped (d) slower
15. 15.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
16. 16.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) yeast (c) a string (d) a ruler
17. 17.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it doubles (c) it stays the same (d) it becomes 4 times
18. 18.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
19. 19.⚖️ 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
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) turmeric powder (d) a stopwatch
21. 21.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) about the same (c) it cannot swing (d) much slower
22. 22.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 14 seconds?
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a mirror (d) a heavy nut or washer
24. 24.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is magnetic (c) the bob could hit you (d) it is hot
25. 25.⚖️ 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 keep it the same (c) we measure it
26. 26.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
27. 27.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
28. 28.True or false: a magnet is not needed for the pendulum. (a) True (b) False
29. 29.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a string (c) a ruler (d) a pencil and tape
30. 30.⚖️ 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) the weight of the bob (d) time for 10 swings
31. 31.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
32. 32.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a string (c) a mirror (d) a battery cell
33. 33.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
34. 34.⚖️ 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 change it (c) we measure it
35. 35.⚖️ 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
36. 36.True or false: yeast is needed for the pendulum. (a) False (b) True
37. 37.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
38. 38.True or false: a ruler is not needed for the pendulum. (a) True (b) False
39. 39.⚖️ 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
40. 40.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?

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