Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 142 · 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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a balloon (d) a stopwatch
2. 2.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) magnetism (c) the string (d) the wind
3. 3.⚖️ 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) how far we pull it back (c) the weight of the bob (d) the same hook
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a mirror (d) a string
5. 5.True or false: a mirror is needed for the pendulum. (a) False (b) True
6. 6.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
7. 7.🧺 Which of these is needed for the pendulum? (a) yeast (b) a balloon (c) turmeric powder (d) a pencil and tape
8. 8.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a pencil and tape (c) a stopwatch (d) a heavy nut or washer
9. 9.🔮 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
10. 10.⚖️ 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 weight of the bob
11. 11.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 33 seconds?
12. 12.⚖️ 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
13. 13.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a sundial (c) a digital watch (d) a phone
14. 14.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a heavy nut or washer (d) yeast
15. 15.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
16. 16.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
17. 17.🔮 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
18. 18.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
19. 19.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a ruler (c) turmeric powder (d) a balloon
20. 20.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a heavy nut or washer (c) a stopwatch (d) turmeric powder
21. 21.True or false: a string is needed for the pendulum. (a) False (b) True
22. 22.🛟 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
23. 23.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a magnet (d) a pencil and tape
25. 25.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) stopped (c) quicker (d) heavier
26. 26.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
27. 27.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much slower (c) yes, much faster (d) it stops swinging
28. 28.⚖️ 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
29. 29.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is wet (d) it is hot
30. 30.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) the string length (c) how far we pull it back (d) time for 10 swings
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a heavy nut or washer (d) a battery cell
33. 33.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
34. 34.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
35. 35.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a string (c) a mirror (d) a balloon
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) yeast (d) a pencil and tape
37. 37.True or false: a magnet is needed for the pendulum. (a) False (b) True
38. 38.⚖️ 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) True (b) False
39. 39.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a magnet (d) a string
40. 40.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 27 seconds?

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