Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 803 · 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 heavy nut or washer (c) a stopwatch (d) a balloon
2. 2.True or false: a battery cell is needed for the pendulum. (a) False (b) True
3. 3.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) gravity (c) the string (d) the wind
4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a small nut or washer (c) a heavy brick (d) a sharp tool
6. 6.True or false: a mirror is needed for the pendulum. (a) False (b) True
7. 7.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
9. 9.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much faster (c) yes, much slower (d) it stops swinging
10. 10.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
11. 11.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a ruler (c) a string (d) a heavy nut or washer
12. 12.🧺 Which of these is needed for the pendulum? (a) a magnet (b) yeast (c) a battery cell (d) a heavy nut or washer
13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a magnet (c) a stopwatch (d) a string
14. 14.⚖️ 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
15. 15.🔮 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 stays the same (d) it doubles
16. 16.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a longer string (c) a lighter bob (d) a shorter string
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the string length (c) time for 10 swings (d) the same hook
18. 18.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) slower (d) heavier
19. 19.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) a ruler (d) yeast
20. 20.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
21. 21.⚖️ 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
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
24. 24.True or false: a string is not needed for the pendulum. (a) True (b) False
25. 25.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
26. 26.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) much slower (d) it cannot swing
27. 27.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
28. 28.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 16 seconds?
29. 29.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
30. 30.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
31. 31.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
32. 32.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a battery cell (d) a stopwatch
33. 33.🛟 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
34. 34.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) 10 is a lucky number (c) it is more accurate (d) it is more fun
35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a heavy nut or washer (c) a pencil and tape (d) a stopwatch
36. 36.⚖️ 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 change it (c) we measure it
37. 37.True or false: a magnet is not needed for the pendulum. (a) True (b) False
38. 38.⚖️ 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 same hook
39. 39.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 30 seconds?
40. 40.⚖️ 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) True (b) False

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