Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 352 · 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.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a heavy nut or washer (c) a mirror (d) a magnet
2. 2.⚖️ 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) True (b) False
3. 3.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much slower (c) yes, much faster (d) no, hardly at all
4. 4.True or false: a balloon is not needed for the pendulum. (a) False (b) True
5. 5.⚖️ 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) how far we pull it back (c) the string length
6. 6.⚖️ 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 weight of the bob
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a magnet (c) a ruler (d) a heavy nut or washer
9. 9.🧺 Which of these is needed for the pendulum? (a) yeast (b) a magnet (c) a stopwatch (d) a mirror
10. 10.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
11. 11.True or false: a battery cell is needed for the pendulum. (a) False (b) True
12. 12.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) it is wet (d) the bob could hit you
13. 13.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 12 seconds?
14. 14.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a longer string (d) a shorter string
15. 15.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it doubles (c) it stays the same (d) it becomes 4 times
16. 16.⚖️ 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
17. 17.⚖️ 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) True (b) False
18. 18.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
19. 19.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 19 seconds?
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a mirror (d) a ruler
21. 21.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) much faster (d) it cannot swing
22. 22.⚖️ 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) time for 10 swings (d) the same hook
23. 23.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
24. 24.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a ruler (d) a balloon
26. 26.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a string (c) a ruler (d) a pencil and tape
27. 27.True or false: a balloon is needed for the pendulum. (a) False (b) True
28. 28.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
30. 30.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) slower (d) stopped
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) turmeric powder (d) a heavy nut or washer
32. 32.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a heavy nut or washer (c) a pencil and tape (d) a magnet
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) True (b) False
34. 34.True or false: a ruler is needed for the pendulum. (a) False (b) True
35. 35.True or false: a string is needed for the pendulum. (a) False (b) True
36. 36.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
37. 37.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a glass bottle (c) a sharp tool (d) a heavy brick
38. 38.⚖️ 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
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
40. 40.True or false: a mirror is needed for the pendulum. (a) True (b) False

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