Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 183 · 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 change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a lighter bob (d) a heavier bob
2. 2.⚖️ 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) True (b) False
3. 3.True or false: a ruler is not needed for the pendulum. (a) True (b) False
4. 4.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
5. 5.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) stopped (d) slower
6. 6.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a magnet (c) a stopwatch (d) a string
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) True (b) False
8. 8.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it stays the same (c) it doubles (d) it halves
9. 9.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
10. 10.⚖️ 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
11. 11.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a pencil and tape (c) yeast (d) a magnet
12. 12.⚖️ 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) time for 10 swings (c) how far we pull it back (d) the weight of the bob
13. 13.⚖️ 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
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a string (d) a battery cell
15. 15.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
16. 16.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
17. 17.True or false: yeast is needed for the pendulum. (a) True (b) False
18. 18.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a grandfather clock (c) a phone (d) a digital watch
19. 19.⚖️ 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
20. 20.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) the bob could hit you (c) it is hot (d) it is wet
21. 21.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a pencil and tape (c) a string (d) a ruler
22. 22.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
23. 23.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
24. 24.⚖️ 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) how far we pull it back (c) the weight of the bob (d) the string length
25. 25.⚖️ 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
26. 26.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
27. 27.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) a balloon (d) a string
28. 28.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) about the same (d) it cannot swing
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a pencil and tape (d) a magnet
30. 30.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
32. 32.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a glass bottle (d) a small nut or washer
33. 33.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
34. 34.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) magnetism (c) the string (d) gravity
35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a string (d) turmeric powder
36. 36.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) yeast (d) a ruler
38. 38.⚖️ 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
39. 39.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
40. 40.🕰️ 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

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