Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 299 · 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? Which of these is what we measure? (a) time for 10 swings (b) the weight of the bob (c) the string length (d) the same hook
2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is the one thing we change. (a) False (b) True
3. 3.⚖️ 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) the weight of the bob
4. 4.⚖️ 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 keep it the same (c) we measure it
5. 5.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
6. 6.⚖️ 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) how far we pull it back (c) the string length (d) time for 10 swings
7. 7.⚖️ 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
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a heavy brick (d) a small nut or washer
10. 10.⚖️ 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) False (b) True
11. 11.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
12. 12.⚖️ 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) False (b) True
13. 13.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
14. 14.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) about the same (c) much slower (d) much faster
15. 15.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 11 seconds?
16. 16.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a heavy nut or washer (c) a balloon (d) a mirror
17. 17.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 20 seconds?
18. 18.True or false: a mirror is not needed for the pendulum. (a) False (b) True
19. 19.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) magnetism (c) the string (d) the wind
20. 20.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a mirror (c) a balloon (d) a pencil and tape
21. 21.⚖️ 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 keep it the same (c) we measure it
22. 22.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) yeast (d) a stopwatch
24. 24.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is wet (d) it is hot
25. 25.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) a stopwatch (d) a magnet
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) turmeric powder (c) a heavy nut or washer (d) a pencil and tape
27. 27.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is the one thing we change. (a) False (b) True
29. 29.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
30. 30.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) a ruler (d) yeast
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a ruler (d) a mirror
32. 32.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it doubles (c) it halves (d) it becomes 4 times
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) False (b) True
34. 34.🧺 Which of these is needed for the pendulum? (a) yeast (b) a string (c) a balloon (d) a magnet
35. 35.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 10 seconds?
36. 36.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a stopwatch (c) turmeric powder (d) a balloon
37. 37.True or false: a ruler is not needed for the pendulum. (a) True (b) False
38. 38.⚖️ 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) True (b) False
39. 39.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
40. 40.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?

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