Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 584 · 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 pencil and tape (d) a battery cell
2. 2.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
3. 3.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a battery cell (c) a string (d) a stopwatch
4. 4.🔮 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
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) the string length (c) time for 10 swings
6. 6.⚖️ 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
7. 7.⚖️ 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
8. 8.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
9. 9.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 15 seconds?
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is the one thing we change. (a) True (b) False
11. 11.⚖️ 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
12. 12.⚖️ 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 same hook (d) the weight of the bob
13. 13.⚖️ 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
14. 14.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) stopped (d) quicker
15. 15.🕰️ 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
16. 16.⚖️ 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) how far we pull it back (c) the same hook (d) the string length
17. 17.True or false: a string is not needed for the pendulum. (a) True (b) False
18. 18.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a magnet (d) a heavy nut or washer
20. 20.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a heavy brick (c) a small nut or washer (d) a glass bottle
21. 21.True or false: a balloon is not needed for the pendulum. (a) False (b) True
22. 22.True or false: a ruler is not needed for the pendulum. (a) True (b) False
23. 23.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
24. 24.⚖️ 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
25. 25.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
26. 26.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
27. 27.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
28. 28.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) the wind (d) gravity
29. 29.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a string (d) a magnet
30. 30.⚖️ 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
31. 31.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
32. 32.⚖️ 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 change it (c) we keep it the same
33. 33.True or false: yeast is not needed for the pendulum. (a) False (b) True
34. 34.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) no, hardly at all (c) yes, much slower (d) it stops swinging
35. 35.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
36. 36.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
37. 37.True or false: yeast is needed for the pendulum. (a) True (b) False
38. 38.True or false: a ruler is needed for the pendulum. (a) False (b) True
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) how far we pull it back
40. 40.True or false: a magnet is not needed for the pendulum. (a) False (b) True

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