Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 263 · 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? True or false: the string length is kept the same. (a) False (b) True
2. 2.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
3. 3.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a glass bottle (c) a heavy brick (d) a sharp tool
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a balloon (c) a stopwatch (d) a string
5. 5.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 14 seconds?
6. 6.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a string (c) a pencil and tape (d) a ruler
7. 7.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) it cannot swing (c) about the same (d) much slower
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a battery cell (c) a stopwatch (d) a pencil and tape
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.True or false: a string is not needed for the pendulum. (a) True (b) False
11. 11.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it becomes 4 times (d) it doubles
12. 12.⚖️ 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) the string length (c) the weight of the bob (d) time for 10 swings
13. 13.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
14. 14.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
15. 15.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a battery cell (c) a heavy nut or washer (d) a string
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the same hook (c) how far we pull it back (d) time for 10 swings
17. 17.True or false: a balloon is not needed for the pendulum. (a) True (b) False
18. 18.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is hot (d) it is magnetic
19. 19.⚖️ 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
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a magnet (d) a pencil and tape
21. 21.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
22. 22.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
23. 23.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) a pencil and tape (d) a mirror
24. 24.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a ruler (c) a battery cell (d) a balloon
25. 25.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
26. 26.True or false: a string is needed for the pendulum. (a) True (b) False
27. 27.🧺 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
28. 28.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) yeast (c) a string (d) a mirror
29. 29.True or false: a magnet is needed for the pendulum. (a) True (b) False
30. 30.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
31. 31.⚖️ 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) False (b) True
32. 32.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
33. 33.⚖️ 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 change it (c) we measure it
34. 34.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
35. 35.🧺 Which of these is needed for the pendulum? (a) a mirror (b) yeast (c) a heavy nut or washer (d) a battery cell
36. 36.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) stopped (d) heavier
37. 37.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) it stops swinging (c) no, hardly at all (d) yes, much slower
38. 38.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 20 seconds?
39. 39.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
40. 40.⚖️ 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

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