Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 876 · 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.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
2. 2.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a heavy nut or washer (c) a ruler (d) a pencil and tape
4. 4.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
5. 5.⚖️ 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
6. 6.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it doubles (c) it stays the same (d) it becomes 4 times
7. 7.⚖️ 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 same hook (c) the string length (d) the weight of the bob
8. 8.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
9. 9.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) the bob could hit you (d) it is hot
10. 10.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) yeast (c) a heavy nut or washer (d) a ruler
11. 11.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
12. 12.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
13. 13.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
14. 14.True or false: a ruler is needed for the pendulum. (a) True (b) False
15. 15.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 8 seconds?
16. 16.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
17. 17.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a magnet (c) yeast (d) a stopwatch
18. 18.🧺 Which of these is needed for the pendulum? (a) yeast (b) a battery cell (c) a balloon (d) a pencil and tape
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a balloon (c) a pencil and tape (d) a heavy nut or washer
20. 20.⚖️ 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
21. 21.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a pencil and tape (c) a heavy nut or washer (d) a stopwatch
22. 22.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) it cannot swing (c) about the same (d) much faster
23. 23.⚖️ 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
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) True (b) False
25. 25.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) it stops swinging (c) yes, much slower (d) yes, much faster
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) turmeric powder (d) a ruler
27. 27.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a pencil and tape (c) a ruler (d) a magnet
28. 28.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) slower (d) stopped
29. 29.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
30. 30.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) True (b) False
31. 31.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a small nut or washer (c) a heavy brick (d) a sharp tool
32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) the same hook (c) the string length (d) time for 10 swings
33. 33.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a pencil and tape (c) a stopwatch (d) a string
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) False (b) True
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) time for 10 swings (c) the string length
37. 37.🧺 Which of these is needed for the pendulum? (a) a balloon (b) turmeric powder (c) a string (d) a magnet
38. 38.⚖️ 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) False (b) True
39. 39.⚖️ 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) True (b) False
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) True (b) False

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