Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 273 · 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 20 swings in 40 seconds. How many seconds does one swing take?
2. 2.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) about the same (d) much slower
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) False (b) True
4. 4.⚖️ 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
5. 5.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) a heavy nut or washer (d) a balloon
6. 6.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
7. 7.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 12 seconds?
8. 8.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 48 seconds?
9. 9.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
10. 10.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) the bob could hit you (c) it is wet (d) it is hot
11. 11.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a string (c) a balloon (d) turmeric powder
12. 12.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a glass bottle (d) a sharp tool
13. 13.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
14. 14.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
15. 15.⚖️ 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
16. 16.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
17. 17.🧺 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 balloon
18. 18.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) a pencil and tape (d) turmeric powder
19. 19.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) the string (d) gravity
20. 20.⚖️ 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 measure it (b) we keep it the same (c) we change it
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a battery cell (c) a stopwatch (d) a string
22. 22.True or false: a balloon is needed for the pendulum. (a) False (b) True
23. 23.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) slower (d) quicker
24. 24.⚖️ 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
25. 25.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) no, hardly at all (c) it stops swinging (d) yes, much faster
26. 26.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a grandfather clock (c) a phone (d) a digital watch
27. 27.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
28. 28.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 40 seconds?
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
30. 30.⚖️ 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
31. 31.⚖️ 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) time for 10 swings (c) the same hook (d) the string length
32. 32.True or false: a battery cell is needed for the pendulum. (a) True (b) False
33. 33.🔮 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
34. 34.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) 10 is a lucky number (c) it is more accurate (d) one swing is too slow
35. 35.True or false: yeast is needed for the pendulum. (a) False (b) True
36. 36.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
37. 37.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) turmeric powder (c) a magnet (d) a heavy nut or washer
38. 38.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a magnet (d) a pencil and tape
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True

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