Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 982 · 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 heavy nut or washer (b) a string (c) a balloon (d) a pencil and tape
2. 2.⚖️ 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
3. 3.⚖️ 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 measure it (c) we keep it the same
4. 4.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
5. 5.⚖️ 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 keep it the same (c) we measure it
6. 6.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?
7. 7.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) much faster (d) it cannot swing
8. 8.⚖️ 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
9. 9.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) one swing is too slow (c) it is more accurate (d) it is more fun
10. 10.True or false: a battery cell is needed for the pendulum. (a) False (b) True
11. 11.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) quicker (d) slower
12. 12.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) turmeric powder (c) a pencil and tape (d) a ruler
13. 13.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
14. 14.True or false: a mirror is needed for the pendulum. (a) True (b) False
15. 15.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
16. 16.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
17. 17.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
18. 18.⚖️ 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
19. 19.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) yes, much faster (c) no, hardly at all (d) it stops swinging
20. 20.True or false: a balloon is needed for the pendulum. (a) False (b) True
21. 21.⚖️ 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 measure it (c) we change it
22. 22.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
23. 23.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a shorter string (c) a longer string (d) a heavier bob
24. 24.🛟 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
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) the string length (c) the weight of the bob (d) the same hook
26. 26.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 16 seconds?
27. 27.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
28. 28.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a pencil and tape (c) a balloon (d) a heavy nut or washer
29. 29.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
30. 30.⚖️ 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
31. 31.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
32. 32.True or false: a ruler is needed for the pendulum. (a) True (b) False
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) the weight of the bob (c) the string length
34. 34.⚖️ 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
35. 35.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 21 seconds?
36. 36.⚖️ 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
37. 37.🛟 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
38. 38.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a string (c) a heavy nut or washer (d) a ruler
39. 39.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
40. 40.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a stopwatch (c) a ruler (d) a string

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