Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 833 · 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 magnet for the pendulum? (a) needed (b) not needed
2. 2.🔮 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 halves (d) it becomes 4 times
3. 3.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
4. 4.True or false: a magnet is not needed for the pendulum. (a) False (b) True
5. 5.⚖️ 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 same hook (c) time for 10 swings (d) the weight of the bob
6. 6.True or false: yeast is not needed for the pendulum. (a) False (b) True
7. 7.True or false: a string is needed for the pendulum. (a) True (b) False
8. 8.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) it is more fun (c) 10 is a lucky number (d) one swing is too slow
9. 9.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
10. 10.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
11. 11.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a balloon (c) a mirror (d) a stopwatch
12. 12.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) yeast (c) a battery cell (d) a balloon
13. 13.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
14. 14.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
15. 15.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
16. 16.True or false: a string is not needed for the pendulum. (a) False (b) True
17. 17.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a battery cell (c) yeast (d) a magnet
18. 18.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) magnetism (c) the string (d) the wind
19. 19.🛟 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
20. 20.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 40 seconds?
21. 21.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) heavier (d) stopped
22. 22.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
23. 23.⚖️ 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
24. 24.True or false: a magnet is needed for the pendulum. (a) False (b) True
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) a string (d) a mirror
26. 26.⚖️ 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
27. 27.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a balloon (d) a pencil and tape
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 same hook (c) time for 10 swings
29. 29.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a small nut or washer (d) a heavy brick
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a stopwatch (d) a battery cell
31. 31.⚖️ 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
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a stopwatch (d) turmeric powder
33. 33.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a mirror (d) a heavy nut or washer
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a magnet (d) a stopwatch
35. 35.⚖️ 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
36. 36.⚖️ 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
37. 37.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) the same hook (c) time for 10 swings (d) how far we pull it back
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?

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