Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 930 · 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 “the weight of the bob”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
3. 3.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a grandfather clock (c) a phone (d) a digital watch
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) turmeric powder (c) a ruler (d) a pencil and tape
5. 5.⚖️ 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 measure it (c) we change it
6. 6.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) a stopwatch (d) a mirror
7. 7.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) yeast (d) a string
8. 8.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) it is more accurate (c) 10 is a lucky number (d) one swing is too slow
9. 9.True or false: a ruler is needed for the pendulum. (a) False (b) True
10. 10.⚖️ 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
11. 11.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it becomes 4 times (c) it stays the same (d) it doubles
12. 12.True or false: a string is needed for the pendulum. (a) False (b) True
13. 13.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is hot (d) it is wet
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the weight of the bob (b) the same hook (c) the string length (d) time for 10 swings
15. 15.True or false: a balloon is needed for the pendulum. (a) False (b) True
16. 16.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a sharp tool (d) a small nut or washer
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) time for 10 swings (c) the string length
18. 18.🔮 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
19. 19.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a pencil and tape (c) a string (d) a stopwatch
20. 20.⚖️ 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
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a string (c) a ruler (d) a heavy nut or washer
22. 22.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a heavier bob (d) a lighter bob
23. 23.⚖️ 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
24. 24.⚖️ 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
25. 25.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) yeast (c) a string (d) a magnet
26. 26.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
27. 27.🧺 Which of these is not needed for the pendulum? (a) a string (b) a balloon (c) a heavy nut or washer (d) a ruler
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
30. 30.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
31. 31.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
32. 32.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
33. 33.⚖️ 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
34. 34.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a balloon (c) a battery cell (d) a magnet
35. 35.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
36. 36.🧺 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 stopwatch (d) a mirror
37. 37.⚖️ 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 weight of the bob (c) time for 10 swings (d) the same hook
38. 38.⚖️ 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 change it (c) we keep it the same
39. 39.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 14 seconds?
40. 40.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed

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