Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 416 · 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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a balloon (c) a pencil and tape (d) a stopwatch
2. 2.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
3. 3.🕰️ 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) it is more fun (d) 10 is a lucky number
4. 4.⚖️ 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) False (b) True
5. 5.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
6. 6.True or false: a mirror is not needed for the pendulum. (a) False (b) True
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) yeast (d) a stopwatch
8. 8.⚖️ 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 string length (c) the same hook
9. 9.⚖️ 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
10. 10.🛟 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
11. 11.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) a balloon (d) a string
12. 12.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a ruler (d) a battery cell
13. 13.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a stopwatch (c) a string (d) yeast
14. 14.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a stopwatch (c) yeast (d) a balloon
15. 15.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
16. 16.⚖️ 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
17. 17.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it halves (c) it doubles (d) it becomes 4 times
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a magnet (d) a heavy nut or washer
19. 19.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much slower (c) yes, much faster (d) no, hardly at all
20. 20.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a magnet (c) a battery cell (d) a ruler
21. 21.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
22. 22.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
23. 23.⚖️ 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 change it (c) we measure it
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a mirror (c) a string (d) a stopwatch
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the string length (b) how far we pull it back (c) time for 10 swings (d) the weight of the bob
26. 26.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
27. 27.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a longer string (c) a shorter string (d) a lighter bob
28. 28.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a magnet (d) a pencil and tape
29. 29.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
30. 30.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
31. 31.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
32. 32.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
33. 33.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
34. 34.True or false: a mirror is needed for the pendulum. (a) False (b) True
35. 35.🛟 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
36. 36.True or false: a string is not needed for the pendulum. (a) True (b) False
37. 37.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) the string (c) magnetism (d) gravity
38. 38.⚖️ 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) False (b) True
39. 39.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
40. 40.True or false: a balloon is needed for the pendulum. (a) True (b) False

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