Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 563 · 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? What do we do with “time for 10 swings”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the same hook (b) the string length (c) time for 10 swings (d) how far we pull it back
3. 3.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?
4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) the same hook (c) the weight of the bob (d) the string length
5. 5.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
6. 6.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
7. 7.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
8. 8.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a phone (c) a sundial (d) a grandfather clock
9. 9.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
10. 10.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) the bob could hit you (d) it is hot
11. 11.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) a balloon (d) a string
12. 12.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a longer string (d) a shorter string
13. 13.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
14. 14.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) it cannot swing (c) much slower (d) about the same
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a heavy nut or washer (d) turmeric powder
16. 16.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the string (c) the wind (d) gravity
17. 17.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) a ruler (d) a mirror
18. 18.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
19. 19.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
20. 20.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it becomes 4 times (c) it halves (d) it doubles
21. 21.⚖️ 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
22. 22.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a magnet (c) a ruler (d) a heavy nut or washer
23. 23.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a pencil and tape (c) turmeric powder (d) a ruler
24. 24.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
26. 26.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
27. 27.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
28. 28.True or false: a string is needed for the pendulum. (a) True (b) False
29. 29.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a heavy brick (d) a small nut or washer
30. 30.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a heavy nut or washer (c) a pencil and tape (d) a ruler
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) True (b) False
32. 32.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a heavy nut or washer (c) turmeric powder (d) a mirror
33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) a magnet (d) a ruler
34. 34.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 8 seconds?
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) False (b) True
36. 36.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
37. 37.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) 10 is a lucky number (c) one swing is too slow (d) it is more fun
38. 38.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a ruler (c) a stopwatch (d) a heavy nut or washer
39. 39.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) slower (d) quicker
40. 40.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed

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