Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 244 · 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 balloon (b) a ruler (c) a heavy nut or washer (d) a string
2. 2.True or false: a string is not needed for the pendulum. (a) True (b) False
3. 3.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) the bob could hit you (d) it is magnetic
4. 4.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
5. 5.⚖️ 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
6. 6.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a sharp tool (c) a glass bottle (d) a heavy brick
7. 7.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) a heavy nut or washer (d) a magnet
9. 9.⚖️ 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 same hook (c) time for 10 swings
10. 10.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
11. 11.⚖️ 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 keep it the same (c) we change it
12. 12.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it stays the same (c) it halves (d) it doubles
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) time for 10 swings (b) the weight of the bob (c) the string length (d) how far we pull it back
14. 14.⚖️ 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 change it (c) we keep it the same
15. 15.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) turmeric powder (d) a ruler
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) the string length (c) how far we pull it back (d) time for 10 swings
17. 17.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) gravity (c) magnetism (d) the wind
18. 18.⚖️ 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
19. 19.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
20. 20.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
21. 21.🧺 Which of these is needed for the pendulum? (a) a magnet (b) turmeric powder (c) a string (d) yeast
22. 22.⚖️ 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
23. 23.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 9 seconds?
24. 24.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
25. 25.⚖️ 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
26. 26.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
27. 27.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a heavy nut or washer (d) turmeric powder
29. 29.🔮 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
30. 30.🧺 Which of these is needed for the pendulum? (a) yeast (b) a balloon (c) a ruler (d) turmeric powder
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a heavy nut or washer (d) yeast
32. 32.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a longer string (d) a shorter string
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) stopped (d) slower
35. 35.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a digital watch (c) a sundial (d) a phone
36. 36.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 28 seconds?
37. 37.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a balloon (c) a heavy nut or washer (d) a pencil and tape
38. 38.⚖️ 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
39. 39.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
40. 40.⚖️ 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 weight of the bob (c) the string length

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