Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 172 · 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.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
2. 2.True or false: a balloon is not needed for the pendulum. (a) False (b) True
3. 3.⚖️ 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
4. 4.⚖️ 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
5. 5.🛟 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
6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) the string length (c) the same hook (d) time for 10 swings
7. 7.True or false: a mirror is needed for the pendulum. (a) False (b) True
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a pencil and tape (d) turmeric powder
9. 9.True or false: a ruler is needed for the pendulum. (a) True (b) False
10. 10.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) a ruler (d) a balloon
11. 11.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) the string (c) magnetism (d) gravity
12. 12.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) a heavy nut or washer (d) a magnet
13. 13.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
14. 14.⚖️ 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
15. 15.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) stopped (c) heavier (d) quicker
16. 16.⚖️ 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 string length (c) how far we pull it back (d) time for 10 swings
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a pencil and tape (c) a heavy nut or washer (d) a ruler
18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we change it (c) we measure it
19. 19.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) the weight of the bob
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.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) the same hook (c) time for 10 swings
23. 23.⚖️ 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 measure it (b) we change it (c) we keep it the same
24. 24.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a lighter bob (d) a heavier bob
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a heavy nut or washer (c) a ruler (d) a pencil and tape
26. 26.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
27. 27.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
28. 28.True or false: a magnet is needed for the pendulum. (a) True (b) False
29. 29.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a phone (c) a digital watch (d) a sundial
30. 30.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a stopwatch (d) a battery cell
31. 31.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a battery cell (d) a string
33. 33.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
34. 34.🔮 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
35. 35.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more accurate (c) one swing is too slow (d) it is more fun
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) True (b) False
37. 37.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
38. 38.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
39. 39.⚖️ 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
40. 40.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a magnet (d) a ruler

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