Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 340 · 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.True or false: a magnet is needed for the pendulum. (a) False (b) True
2. 2.⚖️ 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) time for 10 swings (c) the string length (d) the weight of the bob
3. 3.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a heavy nut or washer (c) a stopwatch (d) a string
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a ruler (d) turmeric powder
5. 5.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
6. 6.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a mirror (c) a balloon (d) a magnet
7. 7.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is wet (c) it is hot (d) it is magnetic
8. 8.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) stopped (d) heavier
9. 9.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
10. 10.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a balloon (d) a stopwatch
12. 12.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) a battery cell (d) a string
13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a ruler (c) a stopwatch (d) a heavy nut or washer
14. 14.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) much faster (d) it cannot swing
15. 15.⚖️ 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 keep it the same (c) we measure it
16. 16.⚖️ 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 measure it (c) we change it
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) True (b) False
18. 18.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
19. 19.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a lighter bob (d) a heavier bob
20. 20.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) the string (d) gravity
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
22. 22.⚖️ 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
23. 23.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
24. 24.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a magnet (c) a ruler (d) a balloon
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a string (d) a battery cell
26. 26.⚖️ 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
27. 27.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 14 seconds?
28. 28.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
29. 29.🛟 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
30. 30.⚖️ 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 keep it the same (b) we measure it (c) we change it
31. 31.True or false: yeast is not needed for the pendulum. (a) False (b) True
32. 32.⚖️ 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 measure it (c) we keep it the same
33. 33.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
34. 34.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
35. 35.True or false: a string is not needed for the pendulum. (a) False (b) True
36. 36.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
37. 37.⚖️ 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 same hook (c) the string length
38. 38.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
39. 39.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
40. 40.True or false: a ruler is not needed for the pendulum. (a) True (b) False

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