Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 837 · 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.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
2. 2.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) one swing is too slow (c) 10 is a lucky number (d) it is more accurate
3. 3.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a string (c) a magnet (d) a balloon
4. 4.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a mirror (c) a battery cell (d) a ruler
5. 5.True or false: a mirror is not needed for the pendulum. (a) False (b) True
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a string (c) a pencil and tape (d) a ruler
7. 7.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a sundial (c) a phone (d) a digital watch
8. 8.⚖️ 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
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) time for 10 swings (c) the same hook (d) the weight of the bob
10. 10.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a heavier bob (c) a shorter string (d) a lighter bob
11. 11.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
12. 12.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
13. 13.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
14. 14.🧺 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 stopwatch
15. 15.⚖️ 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) False (b) True
16. 16.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a battery cell (c) a mirror (d) turmeric powder
17. 17.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
18. 18.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 12 seconds?
19. 19.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
20. 20.⚖️ 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 change it (c) we keep it the same
21. 21.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a heavy nut or washer (c) a string (d) a pencil and tape
22. 22.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
23. 23.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
24. 24.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a heavy nut or washer (c) a ruler (d) a string
26. 26.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) about the same (d) it cannot swing
27. 27.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a string (d) a battery cell
28. 28.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) it is wet (d) the bob could hit you
29. 29.⚖️ 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
30. 30.⚖️ 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
31. 31.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a sharp tool (d) a small nut or washer
32. 32.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a heavy nut or washer (c) a pencil and tape (d) a string
33. 33.True or false: yeast is needed for the pendulum. (a) True (b) False
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 keep it the same (b) we change it (c) we measure it
35. 35.🕰️ 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
36. 36.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 20 seconds?
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a ruler (d) turmeric powder
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a ruler (d) yeast
39. 39.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 30 seconds?
40. 40.True or false: a string is not needed for the pendulum. (a) True (b) False

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