Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 765 · 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? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) how far we pull it back
2. 2.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
4. 4.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) yeast (d) a ruler
5. 5.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) yeast (d) a ruler
6. 6.🧺 Which of these is needed for the pendulum? (a) yeast (b) turmeric powder (c) a balloon (d) a heavy nut or washer
7. 7.🧺 Which of these is needed for the pendulum? (a) yeast (b) a pencil and tape (c) a magnet (d) turmeric powder
8. 8.⚖️ 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 same hook
9. 9.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) stopped (d) heavier
10. 10.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
11. 11.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a string (c) a stopwatch (d) a heavy nut or washer
12. 12.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
13. 13.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 11 seconds?
14. 14.⚖️ 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
15. 15.⚖️ 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
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) time for 10 swings (b) the weight of the bob (c) the string length (d) how far we pull it back
17. 17.🧺 Which of these is needed for the pendulum? (a) a string (b) a balloon (c) a mirror (d) turmeric powder
18. 18.🛟 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
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a magnet (c) a string (d) a pencil and tape
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a pencil and tape (d) turmeric powder
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a balloon (c) a stopwatch (d) a heavy nut or washer
22. 22.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) it cannot swing (d) much faster
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) True (b) False
24. 24.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
25. 25.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
26. 26.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much faster (c) yes, much slower (d) no, hardly at all
27. 27.🔮 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
28. 28.⚖️ 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 measure it (c) we keep it the same
29. 29.⚖️ 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 measure it (c) we keep it the same
30. 30.⚖️ 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 measure it (c) we keep it the same
31. 31.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
32. 32.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
33. 33.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a heavy nut or washer (d) yeast
35. 35.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a stopwatch (c) a string (d) a pencil and tape
36. 36.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) the string (d) gravity
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
38. 38.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a battery cell (c) a ruler (d) a stopwatch
40. 40.⚖️ 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) False (b) True

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