Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 707 · 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 pencil and tape (b) a stopwatch (c) a string (d) a magnet
2. 2.True or false: a magnet is needed for the pendulum. (a) True (b) False
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) False (b) True
4. 4.⚖️ 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
5. 5.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it halves (c) it doubles (d) it stays the same
6. 6.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
8. 8.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
9. 9.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) slower (d) heavier
10. 10.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a mirror (c) a stopwatch (d) a pencil and tape
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a pencil and tape (c) a string (d) a heavy nut or washer
12. 12.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
13. 13.⚖️ 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
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) yeast (c) a heavy nut or washer (d) a stopwatch
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 the one thing we change? (a) the string length (b) time for 10 swings (c) how far we pull it back (d) the same hook
17. 17.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) no, hardly at all (c) yes, much slower (d) yes, much faster
18. 18.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
19. 19.🧺 Which of these is needed for the pendulum? (a) a mirror (b) turmeric powder (c) a stopwatch (d) a magnet
20. 20.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a longer string (c) a lighter bob (d) a shorter string
21. 21.🧺 Which of these is needed for the pendulum? (a) a ruler (b) turmeric powder (c) a battery cell (d) a balloon
22. 22.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 10 seconds?
23. 23.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
24. 24.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is hot (c) it is wet (d) it is magnetic
25. 25.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a phone (c) a sundial (d) a digital watch
26. 26.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a heavy brick (d) a small nut or washer
29. 29.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
30. 30.⚖️ 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) time for 10 swings (c) the same hook (d) the string length
31. 31.True or false: a mirror is needed for the pendulum. (a) False (b) True
32. 32.⚖️ 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 weight of the bob
33. 33.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) a magnet (d) a pencil and tape
34. 34.⚖️ 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
35. 35.⚖️ 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
36. 36.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) 10 is a lucky number (c) it is more accurate (d) one swing is too slow
37. 37.⚖️ 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) False (b) True
38. 38.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) the string (c) magnetism (d) gravity
39. 39.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 20 seconds?
40. 40.True or false: yeast is needed for the pendulum. (a) False (b) True

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