Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 942 · 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.True or false: a balloon is needed for the pendulum. (a) True (b) False
2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) True (b) False
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) a string (d) a stopwatch
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) a battery cell (d) a pencil and tape
5. 5.⚖️ 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
6. 6.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a heavy brick (d) a small nut or washer
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) the weight of the bob (c) time for 10 swings (d) how far we pull it back
8. 8.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) heavier (d) stopped
9. 9.⚖️ 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) how far we pull it back (d) the weight of the bob
10. 10.🕰️ 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
11. 11.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a stopwatch (c) turmeric powder (d) yeast
12. 12.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a balloon (d) a pencil and tape
13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) yeast (c) a string (d) a pencil and tape
14. 14.🧺 Which of these is needed for the pendulum? (a) a magnet (b) yeast (c) a string (d) a balloon
15. 15.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the string (c) the wind (d) magnetism
16. 16.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
17. 17.True or false: a string is needed for the pendulum. (a) True (b) False
18. 18.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it becomes 4 times (c) it halves (d) it doubles
19. 19.True or false: a pencil and tape is needed for the pendulum. (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 balloon (d) a ruler
21. 21.⚖️ 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
22. 22.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a heavy nut or washer (c) turmeric powder (d) yeast
23. 23.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
24. 24.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
25. 25.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much faster (c) it stops swinging (d) yes, much slower
26. 26.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a magnet (d) a stopwatch
28. 28.⚖️ 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 change it (c) we keep it the same
29. 29.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
30. 30.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we keep it the same (c) we change it
31. 31.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) about the same (c) much slower (d) much faster
32. 32.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a stopwatch (c) a ruler (d) a mirror
33. 33.🧺 Which of these is needed for the pendulum? (a) a ruler (b) yeast (c) turmeric powder (d) a balloon
34. 34.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a stopwatch (c) a string (d) a heavy nut or washer
35. 35.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
36. 36.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is magnetic (c) it is hot (d) the bob could hit you
37. 37.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
38. 38.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
39. 39.⚖️ 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) False (b) True
40. 40.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed

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