Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 682 · 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.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) about the same (c) much slower (d) much faster
2. 2.⚖️ 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
3. 3.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a pencil and tape (d) a magnet
5. 5.🧺 Which of these is needed for the pendulum? (a) yeast (b) a battery cell (c) a magnet (d) a stopwatch
6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
7. 7.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) magnetism (c) gravity (d) the string
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) the weight of the bob
9. 9.True or false: a magnet is needed for the pendulum. (a) True (b) False
10. 10.True or false: yeast is needed for the pendulum. (a) False (b) True
11. 11.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) turmeric powder (d) a stopwatch
12. 12.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) stopped (d) heavier
13. 13.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a mirror (c) a ruler (d) a string
14. 14.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
15. 15.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
16. 16.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
17. 17.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
18. 18.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
19. 19.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
20. 20.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a sharp tool (d) a small nut or washer
21. 21.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a phone (c) a digital watch (d) a sundial
22. 22.🛟 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
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 8 seconds?
25. 25.🔮 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
26. 26.⚖️ 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
27. 27.True or false: a mirror is needed for the pendulum. (a) True (b) False
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) time for 10 swings (c) the weight of the bob (d) the same hook
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) time for 10 swings (b) the same hook (c) how far we pull it back (d) the string length
31. 31.⚖️ 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
32. 32.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 54 seconds?
33. 33.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) a battery cell (d) a pencil and tape
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a string (c) a pencil and tape (d) a heavy nut or washer
35. 35.🧺 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 string
36. 36.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) a ruler (d) a battery cell
37. 37.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
38. 38.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a ruler (c) a string (d) a stopwatch
40. 40.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) yeast (d) a stopwatch

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