Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 996 · 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.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) slower (d) quicker
2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) True (b) False
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a string (c) a heavy nut or washer (d) a ruler
4. 4.⚖️ 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
5. 5.⚖️ 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
6. 6.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a heavy nut or washer (d) a balloon
7. 7.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it becomes 4 times (c) it doubles (d) it stays the same
8. 8.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a shorter string (c) a longer string (d) a lighter bob
9. 9.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
10. 10.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) a battery cell (d) a ruler
11. 11.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) gravity (c) the string (d) the wind
12. 12.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much slower (c) yes, much faster (d) no, hardly at all
13. 13.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 8 seconds?
14. 14.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
15. 15.⚖️ 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
16. 16.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) yeast (c) a pencil and tape (d) a ruler
17. 17.⚖️ 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
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a heavy nut or washer (d) a magnet
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the same hook (b) the string length (c) how far we pull it back (d) the weight of the bob
21. 21.🧺 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 string (d) a balloon
22. 22.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
23. 23.⚖️ 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
24. 24.True or false: a ruler is needed for the pendulum. (a) True (b) False
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 weight of the bob (c) how far we pull it back (d) the same hook
26. 26.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?
27. 27.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is hot (d) it is magnetic
28. 28.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
31. 31.True or false: a balloon is not needed for the pendulum. (a) True (b) False
32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) True (b) False
33. 33.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a sharp tool (d) a glass bottle
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) False (b) True
35. 35.⚖️ 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 measure it (c) we keep it the same
36. 36.🧺 Which of these is needed for the pendulum? (a) a mirror (b) turmeric powder (c) a pencil and tape (d) a magnet
37. 37.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
38. 38.🕰️ 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
39. 39.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
40. 40.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed

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