Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 270 · 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 kept the same? (a) the string length (b) the same hook (c) time for 10 swings
2. 2.🛟 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
3. 3.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) it is hot (d) the bob could hit you
4. 4.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
5. 5.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
6. 6.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
7. 7.🧺 Which of these is needed for the pendulum? (a) a magnet (b) yeast (c) a heavy nut or washer (d) a battery cell
8. 8.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
9. 9.True or false: a mirror is needed for the pendulum. (a) False (b) True
10. 10.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
11. 11.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
12. 12.⚖️ 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
13. 13.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a balloon (c) a mirror (d) a string
14. 14.⚖️ 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) how far we pull it back (c) the same hook (d) the weight of the bob
15. 15.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
16. 16.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it doubles (c) it stays the same (d) it becomes 4 times
17. 17.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a pencil and tape (d) yeast
18. 18.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) gravity (c) magnetism (d) the string
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a magnet (d) a heavy nut or washer
20. 20.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) quicker (d) slower
21. 21.⚖️ 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
22. 22.⚖️ 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) False (b) True
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a balloon (d) a stopwatch
24. 24.True or false: a ruler is not needed for the pendulum. (a) True (b) False
25. 25.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
26. 26.⚖️ 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
27. 27.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a shorter string (d) a longer string
28. 28.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
29. 29.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a pencil and tape (d) a balloon
30. 30.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
31. 31.⚖️ 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 keep it the same (b) we measure it (c) we change it
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) turmeric powder (d) a stopwatch
33. 33.🧺 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 string (d) a mirror
34. 34.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
35. 35.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) a heavy nut or washer (d) a magnet
36. 36.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is kept the same. (a) False (b) True
39. 39.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
40. 40.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much slower (c) no, hardly at all (d) yes, much faster

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