Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 494 · 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 stopwatch is needed for the pendulum. (a) False (b) True
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a ruler (c) a stopwatch (d) a heavy nut or washer
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a mirror (d) a heavy nut or washer
4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
5. 5.⚖️ 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
6. 6.⚖️ 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 weight of the bob (c) the string length
7. 7.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) the wind (c) magnetism (d) gravity
8. 8.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
9. 9.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a mirror (c) yeast (d) a magnet
10. 10.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a small nut or washer (d) a heavy brick
11. 11.True or false: a ruler is not needed for the pendulum. (a) False (b) True
12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a balloon (d) a string
13. 13.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 17 seconds?
14. 14.⚖️ 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
15. 15.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 12 seconds?
16. 16.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
17. 17.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) it is magnetic (d) the bob could hit you
18. 18.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) about the same (c) much faster (d) much slower
19. 19.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 19 seconds?
20. 20.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 12 seconds?
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is kept the same. (a) True (b) False
22. 22.⚖️ 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) False (b) True
23. 23.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a balloon (c) a string (d) a heavy nut or washer
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.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
26. 26.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) quicker (d) stopped
27. 27.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it halves (c) it stays the same (d) it becomes 4 times
28. 28.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
29. 29.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
30. 30.⚖️ 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
31. 31.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a battery cell (d) a stopwatch
33. 33.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
34. 34.True or false: a battery cell is needed for the pendulum. (a) True (b) False
35. 35.⚖️ 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
36. 36.⚖️ 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 keep it the same (c) we measure it
37. 37.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) turmeric powder (d) a pencil and tape
39. 39.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a stopwatch (c) a pencil and tape (d) yeast
40. 40.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed

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