Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 551 · 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.True or false: a string is needed for the pendulum. (a) False (b) True
2. 2.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
3. 3.🛟 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
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a pencil and tape (d) turmeric powder
5. 5.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a battery cell (c) a ruler (d) a heavy nut or washer
6. 6.⚖️ 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
7. 7.🔮 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 halves (d) it doubles
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a balloon (c) a string (d) a ruler
9. 9.True or false: a battery cell is needed for the pendulum. (a) True (b) False
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
11. 11.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
12. 12.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
13. 13.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
14. 14.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
15. 15.⚖️ 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
16. 16.⚖️ 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
17. 17.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
18. 18.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) one swing is too slow (c) 10 is a lucky number (d) it is more fun
19. 19.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a string (c) a ruler (d) a pencil and tape
20. 20.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 10 seconds?
21. 21.⚖️ 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 measure it (c) we change it
22. 22.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a ruler (c) a pencil and tape (d) a string
24. 24.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a shorter string (d) a longer string
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we measure it (c) we change it
26. 26.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
27. 27.🛟 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
28. 28.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
29. 29.⚖️ 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 measure it (c) we change it
30. 30.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
31. 31.⚖️ 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
32. 32.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
33. 33.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
34. 34.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) about the same (c) much slower (d) much faster
35. 35.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
36. 36.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) a string (d) turmeric powder
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a pencil and tape (c) a ruler (d) a stopwatch
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 weight of the bob
39. 39.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the weight of the bob (b) the same hook (c) time for 10 swings (d) the string length

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