Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 725 · 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? True or false: the string length is kept the same. (a) False (b) True
2. 2.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) it is hot (d) the bob could hit you
3. 3.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
4. 4.🛟 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
5. 5.🧺 Which of these is needed for the pendulum? (a) a magnet (b) yeast (c) turmeric powder (d) a pencil and tape
6. 6.True or false: a battery cell is needed for the pendulum. (a) False (b) True
7. 7.⚖️ 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 change it (b) we measure it (c) we keep it the same
8. 8.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
9. 9.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a shorter string (d) a longer string
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the weight of the bob (b) time for 10 swings (c) how far we pull it back (d) the string length
11. 11.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
12. 12.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a pencil and tape (c) a heavy nut or washer (d) a ruler
14. 14.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a battery cell (c) a balloon (d) a stopwatch
15. 15.⚖️ 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
16. 16.⚖️ 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 keep it the same (c) we change it
17. 17.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a magnet (d) a heavy nut or washer
19. 19.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
20. 20.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
21. 21.🧺 Which of these is not needed for the pendulum? (a) a string (b) a balloon (c) a stopwatch (d) a ruler
22. 22.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
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 change it (b) we measure it (c) we keep it the same
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a battery cell (c) a string (d) a heavy nut or washer
25. 25.True or false: a string is not needed for the pendulum. (a) False (b) True
26. 26.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it doubles (d) it becomes 4 times
27. 27.⚖️ 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) time for 10 swings (d) how far we pull it back
28. 28.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
29. 29.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
30. 30.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a grandfather clock (c) a digital watch (d) a phone
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) yeast (c) a stopwatch (d) a ruler
32. 32.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) a balloon (d) a ruler
33. 33.True or false: a mirror is not needed for the pendulum. (a) True (b) False
34. 34.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
35. 35.True or false: a magnet is not needed for the pendulum. (a) False (b) True
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) turmeric powder (d) a heavy nut or washer
37. 37.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 20 seconds?
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) time for 10 swings (c) the string length
39. 39.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 18 seconds?
40. 40.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?

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