Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 956 · 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.⚖️ 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
2. 2.⚖️ 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) time for 10 swings (c) the weight of the bob (d) the string length
3. 3.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much faster (c) yes, much slower (d) no, hardly at all
4. 4.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
5. 5.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a mirror (d) a string
7. 7.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 14 seconds?
8. 8.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 36 seconds?
9. 9.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) a battery cell (d) a heavy nut or washer
10. 10.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a pencil and tape (c) a string (d) a heavy nut or washer
11. 11.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a small nut or washer (d) a heavy brick
12. 12.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
13. 13.⚖️ 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
14. 14.⚖️ 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
15. 15.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
16. 16.⚖️ 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 change it (c) we keep it the same
17. 17.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a mirror (c) yeast (d) a magnet
18. 18.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it doubles (c) it becomes 4 times (d) it halves
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a ruler (c) a stopwatch (d) a heavy nut or washer
20. 20.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a digital watch (c) a phone (d) a grandfather clock
21. 21.⚖️ 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
22. 22.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
23. 23.⚖️ 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 keep it the same (c) we change it
24. 24.⚖️ 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
25. 25.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) it cannot swing (c) much slower (d) much faster
26. 26.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
27. 27.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
28. 28.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) the bob could hit you (d) it is magnetic
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a heavy nut or washer (d) a battery cell
30. 30.⚖️ 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
31. 31.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the string (c) gravity (d) the wind
34. 34.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
35. 35.🕰️ 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
36. 36.True or false: a battery cell is needed for the pendulum. (a) True (b) False
37. 37.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
38. 38.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) the string length (c) time for 10 swings
40. 40.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) yeast (c) a string (d) a stopwatch

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