Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 664 · 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.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is wet (d) it is hot
2. 2.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
3. 3.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) a ruler (d) a balloon
4. 4.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 10 seconds?
5. 5.⚖️ 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
6. 6.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a stopwatch (c) a ruler (d) a heavy nut or washer
7. 7.⚖️ 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
8. 8.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) yeast (d) a string
9. 9.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a small nut or washer (d) a heavy brick
10. 10.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a lighter bob (c) a heavier bob (d) a longer string
11. 11.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a balloon (d) a string
12. 12.True or false: a mirror is needed for the pendulum. (a) False (b) True
13. 13.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) a mirror (d) a stopwatch
14. 14.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 17 seconds?
15. 15.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
16. 16.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) a battery cell (d) turmeric powder
17. 17.⚖️ 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) the string length (d) time for 10 swings
18. 18.⚖️ 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
19. 19.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
20. 20.⚖️ 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
21. 21.⚖️ 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) False (b) True
22. 22.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a magnet (c) a balloon (d) a stopwatch
23. 23.True or false: a ruler is needed for the pendulum. (a) True (b) False
24. 24.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
25. 25.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
26. 26.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
27. 27.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a pencil and tape (c) yeast (d) a balloon
28. 28.True or false: a magnet is needed for the pendulum. (a) True (b) False
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a string (d) a balloon
30. 30.⚖️ 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 keep it the same (c) we change it
31. 31.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
32. 32.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it halves (c) it becomes 4 times (d) it doubles
33. 33.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) slower (d) heavier
34. 34.True or false: a balloon is not needed for the pendulum. (a) False (b) True
35. 35.⚖️ 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 change it (b) we keep it the same (c) we measure it
36. 36.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 8 seconds?
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we keep it the same (c) we change it
38. 38.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a phone (c) a sundial (d) a grandfather clock
39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a pencil and tape (d) turmeric powder
40. 40.⚖️ 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

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