Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 52 · 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.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) the bob could hit you (d) it is magnetic
2. 2.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
3. 3.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) it cannot swing (d) about the same
4. 4.True or false: yeast is needed for the pendulum. (a) True (b) False
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 30 seconds?
7. 7.True or false: a magnet is needed for the pendulum. (a) False (b) True
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a balloon (d) a ruler
9. 9.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
10. 10.🛟 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
11. 11.True or false: a balloon is needed for the pendulum. (a) True (b) False
12. 12.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a mirror (c) yeast (d) a balloon
13. 13.True or false: a ruler is not needed for the pendulum. (a) False (b) True
14. 14.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) yeast (d) a stopwatch
15. 15.⚖️ 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) time for 10 swings (d) the same hook
16. 16.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
17. 17.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
18. 18.⚖️ 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
19. 19.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) heavier (d) stopped
20. 20.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a shorter string (d) a longer string
21. 21.⚖️ 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
22. 22.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
23. 23.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it becomes 4 times (c) it halves (d) it doubles
24. 24.⚖️ 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
25. 25.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
26. 26.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) yeast (c) a string (d) turmeric powder
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a ruler (c) a pencil and tape (d) a string
29. 29.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a magnet (c) a string (d) a heavy nut or washer
31. 31.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) the wind (d) gravity
32. 32.⚖️ 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
33. 33.True or false: a mirror is needed for the pendulum. (a) True (b) False
34. 34.⚖️ 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) how far we pull it back
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) time for 10 swings (c) the weight of the bob (d) the same hook
36. 36.⚖️ 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 change it (b) we keep it the same (c) we measure it
37. 37.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 10 seconds?
38. 38.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) a heavy nut or washer (d) turmeric powder
39. 39.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
40. 40.⚖️ 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

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