Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 964 · 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.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
2. 2.True or false: a string is not needed for the pendulum. (a) False (b) True
3. 3.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a mirror (c) yeast (d) a heavy nut or washer
4. 4.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) turmeric powder (c) yeast (d) a stopwatch
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) how far we pull it back (c) time for 10 swings (d) the same hook
6. 6.🛟 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
7. 7.⚖️ 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
8. 8.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) quicker (d) slower
9. 9.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
10. 10.True or false: yeast is needed for the pendulum. (a) False (b) True
11. 11.True or false: a mirror is not needed for the pendulum. (a) True (b) False
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) True (b) False
13. 13.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a heavier bob (c) a longer string (d) a lighter bob
14. 14.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a heavy nut or washer (c) a string (d) a ruler
15. 15.True or false: a balloon is needed for the pendulum. (a) False (b) True
16. 16.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
17. 17.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) gravity (c) the string (d) the wind
18. 18.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) it cannot swing (c) much slower (d) about the same
19. 19.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a string (c) a mirror (d) turmeric powder
20. 20.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a pencil and tape (d) yeast
21. 21.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a ruler (c) a balloon (d) a mirror
22. 22.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a magnet (c) a ruler (d) a heavy nut or washer
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) a ruler (d) turmeric powder
24. 24.True or false: a magnet is not needed for the pendulum. (a) False (b) True
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) it is more accurate (c) 10 is a lucky number (d) it is more fun
27. 27.⚖️ 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 measure it (b) we keep it the same (c) we change it
28. 28.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
29. 29.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
30. 30.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
31. 31.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) yes, much slower (c) it stops swinging (d) no, hardly at all
32. 32.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a ruler (c) a pencil and tape (d) a heavy nut or washer
34. 34.⚖️ 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) True (b) False
35. 35.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 14 seconds?
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the string length (b) the same hook (c) time for 10 swings (d) the weight of the bob
37. 37.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 18 seconds?
38. 38.True or false: a magnet is needed for the pendulum. (a) False (b) True
39. 39.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a small nut or washer (d) a heavy brick
40. 40.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed

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