Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 815 · 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.True or false: yeast is needed for the pendulum. (a) False (b) True
2. 2.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a stopwatch (d) a balloon
4. 4.🧺 Which of these is not needed for the pendulum? (a) a string (b) a balloon (c) a ruler (d) a pencil and tape
5. 5.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
6. 6.🛟 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
7. 7.True or false: a string is not needed for the pendulum. (a) True (b) False
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) yeast (d) a heavy nut or washer
9. 9.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
10. 10.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
11. 11.⚖️ 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) time for 10 swings (c) the weight of the bob (d) the string length
12. 12.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
13. 13.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
14. 14.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
15. 15.🧺 Do we need a magnet 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 same hook is the one thing we change. (a) False (b) True
17. 17.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) one swing is too slow (c) 10 is a lucky number (d) it is more fun
18. 18.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) it cannot swing (d) much faster
19. 19.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) time for 10 swings (c) how far we pull it back (d) the string length
21. 21.🧺 Which of these is not needed for the pendulum? (a) a string (b) a battery cell (c) a stopwatch (d) a heavy nut or washer
22. 22.⚖️ 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
23. 23.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
24. 24.⚖️ 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
25. 25.True or false: a balloon is not needed for the pendulum. (a) False (b) True
26. 26.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a sharp tool (c) a heavy brick (d) a glass bottle
27. 27.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) yeast (c) a pencil and tape (d) a string
28. 28.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) gravity (c) magnetism (d) the wind
29. 29.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 40 seconds?
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a battery cell (c) a stopwatch (d) a string
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
32. 32.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a stopwatch (c) a battery cell (d) turmeric powder
33. 33.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
34. 34.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a phone (c) a grandfather clock (d) a digital watch
35. 35.⚖️ 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
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 30 seconds?
38. 38.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
39. 39.🧺 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 stopwatch
40. 40.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a pencil and tape (c) a stopwatch (d) a string

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