Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 589 · 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.⚖️ 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
2. 2.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
3. 3.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 18 seconds?
4. 4.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
5. 5.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
6. 6.True or false: a string is not needed for the pendulum. (a) True (b) False
7. 7.⚖️ 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
8. 8.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
9. 9.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a magnet (c) turmeric powder (d) a balloon
10. 10.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a balloon (c) a string (d) a stopwatch
11. 11.🔮 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
12. 12.⚖️ 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) True (b) False
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
14. 14.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) stopped (c) quicker (d) heavier
15. 15.⚖️ 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
16. 16.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
17. 17.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a string (c) a stopwatch (d) a pencil and tape
18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) how far we pull it back (c) the string length (d) the weight of the bob
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.True or false: a mirror is needed for the pendulum. (a) True (b) False
21. 21.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 42 seconds?
22. 22.🧺 Which of these is not needed for the pendulum? (a) a string (b) turmeric powder (c) a ruler (d) a heavy nut or washer
23. 23.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
24. 24.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it halves (c) it doubles (d) it becomes 4 times
25. 25.True or false: a mirror is not needed for the pendulum. (a) False (b) True
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a stopwatch (d) a magnet
27. 27.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is hot (d) it is wet
28. 28.⚖️ 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 weight of the bob (c) time for 10 swings
29. 29.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
30. 30.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
31. 31.⚖️ 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 change it (c) we measure it
32. 32.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a glass bottle (d) a small nut or washer
33. 33.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much slower (c) yes, much faster (d) it stops swinging
34. 34.True or false: a magnet is needed for the pendulum. (a) True (b) False
35. 35.⚖️ 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) how far we pull it back
36. 36.⚖️ 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 change it (c) we keep it the same
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a stopwatch (d) a battery cell
38. 38.⚖️ 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
39. 39.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
40. 40.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a heavy nut or washer (c) yeast (d) a magnet

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