Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 951 · 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.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
2. 2.⚖️ 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
3. 3.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 60 seconds?
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a battery cell (c) a string (d) a heavy nut or washer
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) True (b) False
6. 6.🔮 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
7. 7.⚖️ 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 change it (c) we keep it the same
8. 8.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
9. 9.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
10. 10.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 39 seconds?
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
12. 12.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) about the same (d) much slower
13. 13.⚖️ 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
14. 14.⚖️ 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
15. 15.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) the bob could hit you (d) it is magnetic
16. 16.True or false: yeast is needed for the pendulum. (a) False (b) True
17. 17.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
18. 18.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) False (b) True
20. 20.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a heavier bob (c) a longer string (d) a lighter bob
21. 21.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
22. 22.⚖️ 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) time for 10 swings (c) how far we pull it back (d) the string length
23. 23.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a glass bottle (c) a heavy brick (d) a sharp tool
24. 24.⚖️ 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
25. 25.True or false: a string is needed for the pendulum. (a) False (b) True
26. 26.⚖️ 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 measure it (c) we keep it the same
27. 27.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
28. 28.True or false: a battery cell is needed for the pendulum. (a) True (b) False
29. 29.⚖️ 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 same hook (c) the string length
30. 30.True or false: a magnet is needed for the pendulum. (a) False (b) True
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a magnet (c) a heavy nut or washer (d) a pencil and tape
32. 32.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a balloon (d) a string
33. 33.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the string (c) the wind (d) gravity
34. 34.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
35. 35.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
36. 36.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
37. 37.🧺 Which of these is needed for the pendulum? (a) a magnet (b) yeast (c) a string (d) turmeric powder
38. 38.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 16 seconds?
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a sundial (c) a grandfather clock (d) a phone

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