Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 441 · 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? What do we do with “the weight of the bob”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
3. 3.True or false: yeast is needed for the pendulum. (a) True (b) False
4. 4.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a balloon (c) a string (d) a stopwatch
5. 5.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) turmeric powder (c) a balloon (d) a battery cell
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a pencil and tape (c) a ruler (d) a heavy nut or washer
7. 7.⚖️ 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) how far we pull it back (c) the weight of the bob (d) the string length
8. 8.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) yeast (d) a stopwatch
9. 9.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a battery cell (c) turmeric powder (d) a magnet
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) False (b) True
11. 11.⚖️ 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 weight of the bob (c) the string length
12. 12.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
13. 13.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a sharp tool (d) a small nut or washer
14. 14.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
15. 15.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the string (c) the wind (d) magnetism
16. 16.⚖️ 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
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) turmeric powder (d) a stopwatch
18. 18.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) it cannot swing (d) about the same
19. 19.⚖️ 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) how far we pull it back (c) the string length
20. 20.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) heavier (d) stopped
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a mirror (c) a stopwatch (d) a pencil and tape
22. 22.True or false: a battery cell is needed for the pendulum. (a) False (b) True
23. 23.True or false: a magnet is needed for the pendulum. (a) False (b) True
24. 24.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it halves (c) it becomes 4 times (d) it stays the same
25. 25.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a stopwatch (c) a mirror (d) a pencil and tape
26. 26.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
27. 27.⚖️ 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 change it (c) we keep it the same
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.⚖️ 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
30. 30.🧺 Which of these is needed for the pendulum? (a) a balloon (b) turmeric powder (c) a heavy nut or washer (d) a mirror
31. 31.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a shorter string (c) a longer string (d) a heavier bob
32. 32.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 18 seconds?
33. 33.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much slower (c) it stops swinging (d) yes, much faster
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.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
36. 36.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
37. 37.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
38. 38.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
39. 39.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
40. 40.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a sundial (c) a grandfather clock (d) a digital watch

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