Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 469 · 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 battery cell is not needed for the pendulum. (a) False (b) True
2. 2.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?
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 same hook
4. 4.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
5. 5.🧺 Which of these is needed for the pendulum? (a) yeast (b) a magnet (c) a balloon (d) a pencil and tape
6. 6.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
7. 7.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is magnetic (d) it is hot
8. 8.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) stopped (c) quicker (d) heavier
9. 9.⚖️ 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
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) the same hook (c) time for 10 swings (d) the string length
11. 11.🧺 Do we need a battery cell 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: time for 10 swings is kept the same. (a) True (b) False
13. 13.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a heavy nut or washer (c) a stopwatch (d) a string
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a mirror (d) a ruler
15. 15.⚖️ 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
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a balloon (c) a ruler (d) a string
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a pencil and tape (d) turmeric powder
18. 18.⚖️ 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
19. 19.⚖️ 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
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) yeast (c) a stopwatch (d) a heavy nut or washer
21. 21.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
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.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a small nut or washer (d) a sharp tool
24. 24.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more fun (c) it is more accurate (d) one swing is too slow
25. 25.True or false: yeast is needed for the pendulum. (a) True (b) False
26. 26.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
27. 27.🔮 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 becomes 4 times (d) it halves
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) False (b) True
29. 29.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a heavier bob (d) a lighter bob
30. 30.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.True or false: a magnet is not needed for the pendulum. (a) True (b) False
33. 33.True or false: a ruler is needed for the pendulum. (a) True (b) False
34. 34.True or false: a ruler is not needed for the pendulum. (a) True (b) False
35. 35.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) gravity (c) magnetism (d) the string
36. 36.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a mirror (c) a string (d) yeast
37. 37.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a battery cell (d) a heavy nut or washer
38. 38.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
39. 39.True or false: a string is needed for the pendulum. (a) True (b) False
40. 40.⚖️ 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

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