Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 385 · 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 battery cell (b) a stopwatch (c) a ruler (d) a heavy nut or washer
2. 2.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a small nut or washer (d) a glass bottle
3. 3.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a stopwatch (c) a pencil and tape (d) a string
5. 5.⚖️ 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
6. 6.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a battery cell (d) a string
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings
8. 8.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) turmeric powder (d) a balloon
11. 11.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a stopwatch (c) a mirror (d) a magnet
12. 12.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a battery cell (c) a magnet (d) yeast
13. 13.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it becomes 4 times (c) it stays the same (d) it doubles
14. 14.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
15. 15.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a heavy nut or washer (d) a balloon
17. 17.True or false: a magnet is not needed for the pendulum. (a) True (b) False
18. 18.⚖️ 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
19. 19.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?
20. 20.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much faster (c) yes, much slower (d) it stops swinging
21. 21.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a magnet (c) a heavy nut or washer (d) a string
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) the same hook (c) the weight of the bob (d) time for 10 swings
23. 23.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
24. 24.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a lighter bob (c) a heavier bob (d) a shorter string
25. 25.True or false: a string is not needed for the pendulum. (a) True (b) False
26. 26.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) the bob could hit you (d) it is wet
27. 27.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a string (c) a magnet (d) turmeric powder
28. 28.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) heavier (d) stopped
29. 29.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a phone (c) a digital watch (d) a grandfather clock
30. 30.⚖️ 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 measure it (c) we change it
31. 31.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
32. 32.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
34. 34.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
35. 35.True or false: a battery cell is needed for the pendulum. (a) True (b) False
36. 36.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a balloon (c) a string (d) a ruler
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the weight of the bob (c) time for 10 swings (d) the string length
38. 38.True or false: a ruler is not needed for the pendulum. (a) True (b) False
39. 39.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
40. 40.True or false: a battery cell is not needed for the pendulum. (a) True (b) False

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