Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 576 · 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.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
2. 2.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a ruler (d) a balloon
3. 3.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 48 seconds?
4. 4.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) a pencil and tape (d) a magnet
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) True (b) False
8. 8.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a lighter bob (d) a heavier bob
9. 9.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
10. 10.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
11. 11.⚖️ 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 same hook (c) the string length (d) the weight of the bob
12. 12.⚖️ 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
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) the weight of the bob (c) how far we pull it back (d) the string length
14. 14.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
15. 15.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a pencil and tape (c) a string (d) a heavy nut or washer
17. 17.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) yeast (c) a stopwatch (d) a heavy nut or washer
18. 18.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) slower (d) heavier
19. 19.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
20. 20.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
21. 21.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) the bob could hit you (c) it is wet (d) it is hot
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) True (b) False
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) True (b) False
24. 24.True or false: a magnet is needed for the pendulum. (a) True (b) False
25. 25.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) no, hardly at all (c) yes, much faster (d) yes, much slower
26. 26.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
27. 27.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) about the same (c) much slower (d) it cannot swing
28. 28.⚖️ 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
29. 29.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
30. 30.⚖️ 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 same hook
31. 31.True or false: a ruler is needed for the pendulum. (a) True (b) False
32. 32.🛟 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
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) True (b) False
35. 35.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) a ruler (d) a battery cell
36. 36.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
37. 37.⚖️ 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
38. 38.🧺 Which of these is needed for the pendulum? (a) yeast (b) a stopwatch (c) a battery cell (d) turmeric powder
39. 39.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
40. 40.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a magnet (c) a balloon (d) a ruler

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