Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 538 · 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.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a glass bottle (d) a sharp tool
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) yeast (c) a string (d) a heavy nut or washer
3. 3.⚖️ 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
4. 4.⚖️ 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
5. 5.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
6. 6.True or false: a balloon is needed for the pendulum. (a) True (b) False
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
8. 8.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a shorter string (d) a longer string
9. 9.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a magnet (d) a pencil and tape
10. 10.⚖️ 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
11. 11.⚖️ 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
12. 12.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
13. 13.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
14. 14.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is wet (c) it is hot (d) it is magnetic
15. 15.⚖️ 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
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) the weight of the bob (c) the string length (d) time for 10 swings
17. 17.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 48 seconds?
18. 18.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 54 seconds?
19. 19.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a battery cell (c) yeast (d) a balloon
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) True (b) False
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a magnet (d) a stopwatch
22. 22.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the string (c) the wind (d) magnetism
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) turmeric powder (c) a string (d) a ruler
24. 24.⚖️ 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 same hook
25. 25.True or false: a battery cell is needed for the pendulum. (a) True (b) False
26. 26.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
27. 27.True or false: a string is not needed for the pendulum. (a) False (b) True
28. 28.⚖️ 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
29. 29.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
30. 30.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
31. 31.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a mirror (d) a pencil and tape
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings
34. 34.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
35. 35.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) quicker (d) slower
36. 36.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
37. 37.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 15 seconds?
38. 38.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we keep it the same (c) we change it
40. 40.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 36 seconds?

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