Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 559 · 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? Which of these is the one thing we change? (a) time for 10 swings (b) the string length (c) the same hook (d) the weight of the bob
2. 2.🧺 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 mirror
3. 3.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
4. 4.⚖️ 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
5. 5.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it becomes 4 times (c) it stays the same (d) it halves
6. 6.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a sharp tool (d) a glass bottle
7. 7.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
8. 8.🧺 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 magnet
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the weight of the bob (c) how far we pull it back (d) time for 10 swings
10. 10.True or false: a magnet is needed for the pendulum. (a) True (b) False
11. 11.⚖️ 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 measure it (c) we keep it the same
12. 12.⚖️ 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
13. 13.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the string (c) the wind (d) magnetism
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) True (b) False
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
16. 16.True or false: a string is not needed for the pendulum. (a) True (b) False
17. 17.⚖️ 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
18. 18.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much slower (c) it stops swinging (d) yes, much faster
19. 19.⚖️ 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
20. 20.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 17 seconds?
21. 21.🛟 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
22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a ruler (d) turmeric powder
23. 23.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a mirror (c) a magnet (d) a pencil and tape
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) much slower (d) it cannot swing
26. 26.True or false: a string is needed for the pendulum. (a) False (b) True
27. 27.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
28. 28.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a stopwatch (c) a ruler (d) a battery cell
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings
30. 30.True or false: yeast is not needed for the pendulum. (a) False (b) True
31. 31.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
32. 32.True or false: a ruler is not needed for the pendulum. (a) False (b) True
33. 33.⚖️ 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
34. 34.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
35. 35.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a mirror (d) a string
36. 36.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
37. 37.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a stopwatch (c) a magnet (d) a ruler
38. 38.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
39. 39.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
40. 40.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?

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