Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 999 · 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.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is magnetic (c) the bob could hit you (d) it is hot
2. 2.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
3. 3.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) magnetism (c) gravity (d) the string
4. 4.🧺 Which of these is needed for the pendulum? (a) yeast (b) a balloon (c) a magnet (d) a ruler
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) False (b) True
6. 6.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a string (d) a battery cell
7. 7.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) much faster (d) it cannot swing
8. 8.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) heavier (d) slower
9. 9.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it doubles (c) it halves (d) it stays the same
10. 10.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a string (c) a heavy nut or washer (d) a ruler
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) turmeric powder (c) a ruler (d) a string
12. 12.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) yeast (d) a stopwatch
13. 13.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) it is more accurate (c) 10 is a lucky number (d) it is more fun
14. 14.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a stopwatch (c) turmeric powder (d) a mirror
15. 15.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a heavy nut or washer (c) a mirror (d) yeast
16. 16.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
17. 17.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
18. 18.⚖️ 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
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) False (b) True
20. 20.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much slower (c) no, hardly at all (d) yes, much faster
21. 21.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
22. 22.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 21 seconds?
23. 23.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a lighter bob (c) a longer string (d) a heavier bob
24. 24.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 36 seconds?
25. 25.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 18 seconds?
26. 26.🧺 Which of these is needed for the pendulum? (a) a mirror (b) yeast (c) a battery cell (d) a pencil and tape
27. 27.⚖️ 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 measure it (c) we change it
28. 28.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
29. 29.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a heavy brick (c) a glass bottle (d) a small nut or washer
30. 30.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) how far we pull it back (c) the string length (d) time for 10 swings
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) yeast (d) a pencil and tape
32. 32.⚖️ 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) True (b) False
33. 33.True or false: a stopwatch 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 “time for 10 swings”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.⚖️ 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) time for 10 swings (c) the string length
36. 36.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
37. 37.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
38. 38.True or false: a battery cell is needed for the pendulum. (a) False (b) True
39. 39.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
40. 40.True or false: a string is not needed for the pendulum. (a) False (b) True

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