Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 863 · 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 needed for the pendulum. (a) True (b) False
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) yeast (c) a pencil and tape (d) a heavy nut or washer
3. 3.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a ruler (c) a balloon (d) turmeric powder
4. 4.⚖️ 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 keep it the same (c) we change it
5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) turmeric powder (d) a pencil and tape
6. 6.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) slower (d) heavier
7. 7.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is hot (c) it is wet (d) it is magnetic
8. 8.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a sharp tool (d) a glass bottle
9. 9.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
10. 10.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a magnet (d) a string
11. 11.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) about the same (c) it cannot swing (d) much slower
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the string length (b) the same hook (c) how far we pull it back (d) the weight of the bob
13. 13.⚖️ 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
14. 14.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
15. 15.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
16. 16.⚖️ 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
17. 17.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it halves (c) it doubles (d) it stays the same
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a ruler (d) a balloon
19. 19.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) it stops swinging (c) yes, much slower (d) no, hardly at all
20. 20.⚖️ 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 change it (c) we measure it
21. 21.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
22. 22.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a lighter bob (d) a heavier bob
23. 23.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) yeast (d) a heavy nut or washer
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) True (b) False
25. 25.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 10 seconds?
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a ruler (c) a string (d) a stopwatch
28. 28.🧺 Which of these is needed for the pendulum? (a) yeast (b) a battery cell (c) a stopwatch (d) a mirror
29. 29.⚖️ 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) the same hook
30. 30.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
31. 31.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 21 seconds?
32. 32.⚖️ 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
33. 33.True or false: a ruler 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 what we measure? (a) the same hook (b) time for 10 swings (c) the string length (d) how far we pull it back
35. 35.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
36. 36.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a mirror (c) turmeric powder (d) a pencil and tape
37. 37.True or false: yeast is not needed for the pendulum. (a) True (b) False
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a heavy nut or washer (c) a string (d) a battery cell
39. 39.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
40. 40.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True

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