Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 370 · 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.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
2. 2.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) it cannot swing (c) about the same (d) much faster
3. 3.True or false: yeast is not needed for the pendulum. (a) False (b) True
4. 4.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
5. 5.⚖️ 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) the weight of the bob (d) time for 10 swings
6. 6.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much faster (c) no, hardly at all (d) yes, much slower
7. 7.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?
8. 8.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) the bob could hit you (c) it is wet (d) it is hot
9. 9.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 39 seconds?
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the string length (b) the weight of the bob (c) the same hook (d) time for 10 swings
11. 11.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) turmeric powder (c) a string (d) a heavy nut or washer
12. 12.⚖️ 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
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we keep it the same (c) we measure it
14. 14.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
15. 15.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
16. 16.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it stays the same (c) it becomes 4 times (d) it halves
17. 17.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
18. 18.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) the string length (c) time for 10 swings
20. 20.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
21. 21.⚖️ 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) False (b) True
22. 22.⚖️ 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
23. 23.True or false: a magnet is needed for the pendulum. (a) False (b) True
24. 24.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
25. 25.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 27 seconds?
26. 26.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) True (b) False
27. 27.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
28. 28.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a sharp tool (c) a heavy brick (d) a glass bottle
29. 29.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a shorter string (d) a longer string
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a battery cell (d) a string
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) time for 10 swings (c) the string length
32. 32.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a magnet (c) a heavy nut or washer (d) a stopwatch
34. 34.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
35. 35.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
36. 36.⚖️ 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
37. 37.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) the string (c) gravity (d) magnetism
38. 38.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 36 seconds?
39. 39.True or false: a magnet is not needed for the pendulum. (a) False (b) True
40. 40.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a pencil and tape (c) a string (d) a stopwatch

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