Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 890 · 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 kept the same? (a) how far we pull it back (b) time for 10 swings (c) the string length
2. 2.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 19 seconds?
3. 3.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
4. 4.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it becomes 4 times (c) it stays the same (d) it doubles
5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) turmeric powder (d) a stopwatch
6. 6.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is magnetic (c) the bob could hit you (d) it is hot
7. 7.⚖️ 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 weight of the bob (c) time for 10 swings (d) the string length
8. 8.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a heavy brick (d) a small nut or washer
9. 9.⚖️ 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
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) True (b) False
11. 11.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) 10 is a lucky number (c) it is more accurate (d) one swing is too slow
12. 12.⚖️ 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) True (b) False
13. 13.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) stopped (d) heavier
14. 14.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) the wind (c) gravity (d) magnetism
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) a pencil and tape (d) yeast
16. 16.⚖️ 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
17. 17.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) a string (d) a mirror
18. 18.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
19. 19.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
20. 20.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a heavy nut or washer (c) a pencil and tape (d) a string
21. 21.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
22. 22.True or false: a magnet is needed for the pendulum. (a) True (b) False
23. 23.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) yeast (c) a mirror (d) a magnet
24. 24.⚖️ 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) how far we pull it back (d) the same hook
25. 25.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a magnet (d) a pencil and tape
26. 26.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
27. 27.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
28. 28.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a longer string (c) a shorter string (d) a lighter bob
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a magnet (c) a ruler (d) a stopwatch
30. 30.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) 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 keep it the same (b) we measure it (c) we change it
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a mirror (d) a ruler
33. 33.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a magnet (c) yeast (d) a balloon
34. 34.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
35. 35.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
36. 36.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a ruler (d) a battery cell
37. 37.⚖️ 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
38. 38.True or false: yeast is not needed for the pendulum. (a) False (b) True
39. 39.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
40. 40.True or false: yeast is needed for the pendulum. (a) True (b) False

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