Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 228 · 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 string (c) a heavy nut or washer (d) a magnet
2. 2.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a heavier bob (d) a lighter bob
3. 3.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it becomes 4 times (c) it doubles (d) it halves
4. 4.⚖️ 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 keep it the same (c) we measure it
5. 5.True or false: a battery cell is needed for the pendulum. (a) True (b) False
6. 6.True or false: a ruler is not needed for the pendulum. (a) False (b) True
7. 7.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a small nut or washer (d) a glass bottle
8. 8.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a stopwatch (c) turmeric powder (d) a string
9. 9.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
11. 11.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) the wind (c) gravity (d) magnetism
12. 12.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) the bob could hit you (c) it is magnetic (d) it is wet
13. 13.🧺 Which of these is needed for the pendulum? (a) yeast (b) a mirror (c) a string (d) turmeric powder
14. 14.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) heavier (d) slower
15. 15.⚖️ 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 string length (c) the weight of the bob (d) the same hook
16. 16.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
17. 17.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a balloon (c) a mirror (d) turmeric powder
18. 18.⚖️ 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 measure it (c) we keep it the same
19. 19.⚖️ 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 measure it (c) we change it
20. 20.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) yeast (d) a heavy nut or washer
22. 22.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a pencil and tape (c) a mirror (d) turmeric powder
23. 23.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.True or false: a string is needed for the pendulum. (a) True (b) False
27. 27.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is kept the same. (a) False (b) True
29. 29.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a battery cell (c) a magnet (d) a balloon
30. 30.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
31. 31.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
32. 32.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
33. 33.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) one swing is too slow (c) 10 is a lucky number (d) it is more accurate
34. 34.⚖️ 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 measure it (c) we keep it the same
35. 35.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
36. 36.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a balloon (c) a ruler (d) a stopwatch
37. 37.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a battery cell (c) a heavy nut or washer (d) a ruler
39. 39.⚖️ 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
40. 40.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 8 seconds?

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