Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 415 · 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.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a battery cell (c) a magnet (d) a pencil and tape
2. 2.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
3. 3.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
4. 4.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) about the same (d) it cannot swing
5. 5.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a small nut or washer (d) a heavy brick
6. 6.🔮 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
7. 7.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
8. 8.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
9. 9.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a battery cell (c) a heavy nut or washer (d) a string
10. 10.True or false: a mirror is needed for the pendulum. (a) True (b) False
11. 11.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) the same hook (c) the weight of the bob (d) time for 10 swings
13. 13.⚖️ 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
14. 14.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) it is wet (d) the bob could hit you
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) yeast (c) a stopwatch (d) a ruler
16. 16.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) gravity (c) magnetism (d) the wind
17. 17.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a stopwatch (c) turmeric powder (d) yeast
18. 18.⚖️ 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
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a balloon (c) a ruler (d) a string
21. 21.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
22. 22.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 60 seconds?
23. 23.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
26. 26.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more fun (c) one swing is too slow (d) it is more accurate
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the same hook (b) how far we pull it back (c) the weight of the bob (d) the string length
28. 28.🧺 Which of these is needed for the pendulum? (a) a mirror (b) turmeric powder (c) a ruler (d) yeast
29. 29.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a lighter bob (c) a longer string (d) a heavier bob
30. 30.True or false: a balloon is not needed for the pendulum. (a) True (b) False
31. 31.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) slower (d) heavier
32. 32.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
33. 33.True or false: a ruler is not needed for the pendulum. (a) False (b) True
34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
36. 36.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a mirror (d) a heavy nut or washer
38. 38.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a stopwatch (c) a string (d) a magnet
39. 39.⚖️ 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
40. 40.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed

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