Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 291 · 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 the one thing we change? (a) the string length (b) how far we pull it back (c) time for 10 swings (d) the weight of the bob
2. 2.⚖️ 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) the weight of the bob (d) time for 10 swings
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a heavy nut or washer (d) a battery cell
4. 4.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) quicker (d) stopped
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.⚖️ 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
7. 7.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
8. 8.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it becomes 4 times (c) it stays the same (d) it halves
9. 9.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a shorter string (c) a longer string (d) a lighter bob
10. 10.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
11. 11.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
12. 12.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a pencil and tape (c) yeast (d) turmeric powder
13. 13.🛟 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
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) a heavy nut or washer (d) a mirror
15. 15.⚖️ 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 keep it the same (c) we measure it
16. 16.True or false: a battery cell is needed for the pendulum. (a) False (b) True
17. 17.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) about the same (d) it cannot swing
18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) time for 10 swings (c) the string length
19. 19.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a battery cell (c) yeast (d) a ruler
20. 20.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) yeast (c) a mirror (d) a magnet
21. 21.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a pencil and tape (d) turmeric powder
23. 23.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) no, hardly at all (c) it stops swinging (d) yes, much faster
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a string (d) yeast
25. 25.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a heavy nut or washer (c) a string (d) a stopwatch
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a pencil and tape (d) a balloon
27. 27.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
28. 28.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
29. 29.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is magnetic (c) it is hot (d) the bob could hit you
30. 30.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) a battery cell (d) a ruler
31. 31.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
32. 32.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 36 seconds?
33. 33.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
34. 34.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 36 seconds?
35. 35.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 27 seconds?
36. 36.⚖️ 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 keep it the same (c) we measure it
37. 37.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
38. 38.⚖️ 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
39. 39.True or false: a balloon is needed for the pendulum. (a) False (b) True
40. 40.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed

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