Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 252 · 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? Which of these is kept the same? (a) the weight of the bob (b) the string length (c) time for 10 swings
2. 2.True or false: a magnet is needed for the pendulum. (a) False (b) True
3. 3.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
4. 4.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) a pencil and tape (d) a mirror
5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a pencil and tape (c) a ruler (d) a stopwatch
6. 6.⚖️ 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
7. 7.🧺 Which of these is needed for the pendulum? (a) a mirror (b) turmeric powder (c) a ruler (d) a balloon
8. 8.⚖️ 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
9. 9.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
10. 10.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
11. 11.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
12. 12.⚖️ 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 measure it (c) we change it
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) a stopwatch (d) a battery cell
15. 15.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
16. 16.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) slower (d) quicker
17. 17.🔮 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
18. 18.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) turmeric powder (d) a heavy nut or washer
19. 19.True or false: a mirror is not needed for the pendulum. (a) False (b) True
20. 20.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a longer string (c) a lighter bob (d) a shorter string
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 keep it the same (b) we change it (c) we measure it
22. 22.🧺 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 ruler (d) a balloon
23. 23.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a small nut or washer (d) a sharp tool
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is the one thing we change. (a) True (b) False
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) a stopwatch (d) a string
26. 26.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a ruler (d) a magnet
27. 27.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is wet (d) it is hot
28. 28.True or false: a string is not needed for the pendulum. (a) False (b) True
29. 29.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 18 seconds?
30. 30.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
31. 31.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a stopwatch (c) a ruler (d) a mirror
32. 32.⚖️ 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 string length (c) how far we pull it back (d) the weight of the bob
33. 33.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
34. 34.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
35. 35.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a string (c) a balloon (d) a mirror
36. 36.⚖️ 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) time for 10 swings (c) the string length (d) the same hook
37. 37.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) gravity (c) magnetism (d) the wind
38. 38.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
39. 39.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 13 seconds?
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) True (b) False

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