Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 599 · 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 string (b) a mirror (c) a stopwatch (d) a pencil and tape
2. 2.⚖️ 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) False (b) True
3. 3.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) a pencil and tape (d) a magnet
4. 4.⚖️ 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) False (b) True
5. 5.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 8 seconds?
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a pencil and tape (d) a balloon
7. 7.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
8. 8.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the same hook (b) the string length (c) how far we pull it back (d) the weight of the bob
11. 11.🔮 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
12. 12.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) much slower (d) about the same
13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) turmeric powder (d) a stopwatch
14. 14.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 42 seconds?
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is the one thing we change. (a) False (b) True
16. 16.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) turmeric powder (c) a string (d) a balloon
17. 17.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is magnetic (c) the bob could hit you (d) it is hot
18. 18.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a stopwatch (c) a battery cell (d) turmeric powder
19. 19.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a glass bottle (d) a sharp tool
20. 20.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a pencil and tape (d) a battery cell
21. 21.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
22. 22.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) quicker (d) stopped
23. 23.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
24. 24.True or false: yeast is not needed for the pendulum. (a) False (b) True
25. 25.⚖️ 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
26. 26.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 18 seconds?
27. 27.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) it is more accurate (c) 10 is a lucky number (d) one swing is too slow
28. 28.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 10 seconds?
29. 29.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
30. 30.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) a pencil and tape (d) yeast
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a ruler (d) a magnet
33. 33.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
34. 34.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) True (b) False
36. 36.⚖️ 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
37. 37.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a grandfather clock (c) a phone (d) a digital watch
38. 38.🧺 Which of these is needed for the pendulum? (a) a balloon (b) turmeric powder (c) a ruler (d) a battery cell
39. 39.🕰️ 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
40. 40.⚖️ 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 keep it the same (b) we change it (c) we measure it

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