Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 565 · 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.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a stopwatch (c) a heavy nut or washer (d) a ruler
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a pencil and tape (d) a battery cell
3. 3.⚖️ 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
4. 4.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a mirror (c) a string (d) a heavy nut or washer
5. 5.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) it is wet (d) the bob could hit you
6. 6.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it becomes 4 times (d) it doubles
7. 7.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a magnet (c) a pencil and tape (d) a ruler
9. 9.True or false: a mirror is not needed for the pendulum. (a) False (b) True
10. 10.🧺 Which of these is needed for the pendulum? (a) yeast (b) a battery cell (c) a stopwatch (d) turmeric powder
11. 11.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
12. 12.True or false: a ruler is not needed for the pendulum. (a) True (b) False
13. 13.🧺 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) turmeric powder
14. 14.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) quicker (d) stopped
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) True (b) False
16. 16.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a pencil and tape (d) a balloon
18. 18.⚖️ 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
19. 19.⚖️ 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) the weight of the bob
20. 20.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
21. 21.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
22. 22.True or false: a battery cell is needed for the pendulum. (a) False (b) True
23. 23.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
24. 24.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
25. 25.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a shorter string (c) a lighter bob (d) a longer string
26. 26.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
27. 27.⚖️ 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 same hook (d) the weight of the bob
28. 28.⚖️ 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
29. 29.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
30. 30.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
31. 31.🛟 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
32. 32.True or false: a balloon is not needed for the pendulum. (a) True (b) False
33. 33.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
34. 34.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 19 seconds?
35. 35.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.⚖️ 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) the same hook (c) the weight of the bob (d) how far we pull it back
38. 38.⚖️ 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) the same hook
39. 39.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
40. 40.True or false: yeast is needed for the pendulum. (a) True (b) False

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