Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 887 · 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? What do we do with “the weight of the bob”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.⚖️ 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
3. 3.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
4. 4.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 20 seconds?
5. 5.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more accurate (c) it is more fun (d) one swing is too slow
6. 6.⚖️ 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) the string length (c) time for 10 swings
7. 7.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 17 seconds?
8. 8.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
9. 9.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a lighter bob (c) a heavier bob (d) a shorter string
10. 10.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it halves (c) it stays the same (d) it doubles
11. 11.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
12. 12.⚖️ 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
13. 13.True or false: a mirror is not needed for the pendulum. (a) True (b) False
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a heavy nut or washer (d) a battery cell
15. 15.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 27 seconds?
16. 16.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) the bob could hit you (d) it is wet
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a magnet (c) a string (d) a stopwatch
18. 18.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
19. 19.⚖️ 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) False (b) True
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a heavy nut or washer (c) a string (d) a balloon
21. 21.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a grandfather clock (c) a phone (d) a digital watch
22. 22.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?
23. 23.⚖️ 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 string length (c) time for 10 swings (d) how far we pull it back
24. 24.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
25. 25.⚖️ 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
26. 26.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a stopwatch (d) turmeric powder
28. 28.True or false: a magnet is not needed for the pendulum. (a) True (b) False
29. 29.🧺 Which of these is needed for the pendulum? (a) a ruler (b) yeast (c) turmeric powder (d) a mirror
30. 30.True or false: a mirror is needed for the pendulum. (a) True (b) False
31. 31.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?
32. 32.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a glass bottle (c) a sharp tool (d) a heavy brick
33. 33.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) yes, much slower (c) no, hardly at all (d) it stops swinging
36. 36.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a stopwatch (c) a ruler (d) a heavy nut or washer
37. 37.⚖️ 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
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a pencil and tape (d) yeast
39. 39.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the string (c) the wind (d) magnetism
40. 40.🧺 Which of these is not needed for the pendulum? (a) a string (b) a magnet (c) a heavy nut or washer (d) a ruler

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