Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 677 · 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.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a battery cell (c) a ruler (d) a string
2. 2.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) one swing is too slow (c) it is more fun (d) 10 is a lucky number
3. 3.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) yeast (c) a pencil and tape (d) a stopwatch
5. 5.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
6. 6.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it halves (c) it doubles (d) it becomes 4 times
7. 7.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) the bob could hit you (d) it is wet
8. 8.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) slower (d) quicker
9. 9.⚖️ 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
10. 10.🧺 Which of these is needed for the pendulum? (a) a ruler (b) turmeric powder (c) a magnet (d) a balloon
11. 11.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) yeast (c) a ruler (d) a string
12. 12.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a heavy brick (c) a glass bottle (d) a small nut or washer
13. 13.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a digital watch (c) a grandfather clock (d) a sundial
14. 14.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a mirror (c) a string (d) a magnet
15. 15.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
16. 16.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) it stops swinging (c) no, hardly at all (d) yes, much faster
17. 17.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
18. 18.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a string (d) turmeric powder
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) the string length (c) the same hook
21. 21.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
22. 22.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) about the same (d) it cannot swing
23. 23.⚖️ 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
24. 24.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
25. 25.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a string (c) a ruler (d) a pencil and tape
26. 26.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
27. 27.⚖️ 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
28. 28.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a pencil and tape (c) a ruler (d) a string
29. 29.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 17 seconds?
30. 30.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
31. 31.⚖️ 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
32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) False (b) True
33. 33.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) the string (d) gravity
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a magnet (c) a heavy nut or washer (d) a ruler
35. 35.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a shorter string (d) a longer string
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) the string length (c) how far we pull it back
37. 37.True or false: a balloon is not needed for the pendulum. (a) False (b) True
38. 38.⚖️ 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
39. 39.True or false: a ruler is needed for the pendulum. (a) False (b) True
40. 40.⚖️ 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) True (b) False

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