Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 878 · 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? True or false: the same hook is the one thing we change. (a) False (b) True
2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
4. 4.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 13 seconds?
5. 5.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a small nut or washer (c) a glass bottle (d) a heavy brick
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a balloon (c) a stopwatch (d) a heavy nut or washer
7. 7.🧺 Which of these is needed for the pendulum? (a) yeast (b) a magnet (c) a mirror (d) a ruler
8. 8.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 8 seconds?
9. 9.⚖️ 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
10. 10.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) about the same (c) much faster (d) it cannot swing
11. 11.⚖️ 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) True (b) False
12. 12.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a pencil and tape (c) a balloon (d) a magnet
13. 13.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
14. 14.True or false: a mirror is not needed for the pendulum. (a) True (b) False
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) time for 10 swings (c) the string length
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a string (d) turmeric powder
17. 17.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) stopped (d) quicker
18. 18.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
19. 19.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
20. 20.⚖️ 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) how far we pull it back (c) the string length (d) time for 10 swings
21. 21.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
22. 22.⚖️ 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
23. 23.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) the bob could hit you (c) it is magnetic (d) it is wet
24. 24.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a string (c) a mirror (d) a battery cell
25. 25.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a shorter string (c) a longer string (d) a lighter bob
26. 26.⚖️ 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 measure it (c) we keep it the same
27. 27.True or false: a ruler is needed for the pendulum. (a) False (b) True
28. 28.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 18 seconds?
29. 29.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it becomes 4 times (d) it doubles
30. 30.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a digital watch (c) a grandfather clock (d) a phone
31. 31.⚖️ 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
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a heavy nut or washer (c) a ruler (d) a stopwatch
33. 33.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) the wind (c) gravity (d) magnetism
34. 34.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a string (c) a pencil and tape (d) a stopwatch
35. 35.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
36. 36.🧺 Which of these is not needed for the pendulum? (a) a string (b) a magnet (c) a heavy nut or washer (d) a pencil and tape
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
38. 38.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
39. 39.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
40. 40.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True

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