Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 122 · 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? 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
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) a string (d) yeast
3. 3.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?
4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) False (b) True
5. 5.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
6. 6.🛟 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
7. 7.🧺 Which of these is not needed for the pendulum? (a) a string (b) turmeric powder (c) a pencil and tape (d) a heavy nut or washer
8. 8.🧺 Which of these is not needed for the pendulum? (a) a string (b) a battery cell (c) a ruler (d) a heavy nut or washer
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) how far we pull it back (c) the string length (d) time for 10 swings
10. 10.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) heavier (d) stopped
11. 11.⚖️ 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
12. 12.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
13. 13.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
14. 14.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) the bob could hit you (c) it is magnetic (d) it is wet
15. 15.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
16. 16.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is kept the same. (a) False (b) True
18. 18.True or false: yeast is needed for the pendulum. (a) True (b) False
19. 19.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a battery cell (c) a balloon (d) a magnet
20. 20.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?
21. 21.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) about the same (d) much slower
22. 22.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
23. 23.True or false: a string is not needed for the pendulum. (a) False (b) True
24. 24.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a longer string (c) a lighter bob (d) a shorter string
25. 25.⚖️ 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) the string length (c) how far we pull it back (d) the same hook
26. 26.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a string (c) a balloon (d) turmeric powder
27. 27.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) magnetism (c) the string (d) gravity
28. 28.True or false: yeast is not needed for the pendulum. (a) False (b) True
29. 29.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not 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) the weight of the bob (c) time for 10 swings
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a battery cell (c) a string (d) a ruler
32. 32.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
33. 33.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a ruler (c) a magnet (d) turmeric powder
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) False (b) True
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) True (b) False
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a stopwatch (d) a magnet
37. 37.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
38. 38.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it doubles (c) it halves (d) it stays the same
39. 39.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a heavy nut or washer (c) a magnet (d) a string
40. 40.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?

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