Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 479 · 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: a pencil and tape is not needed for the pendulum. (a) True (b) False
2. 2.⚖️ 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) True (b) False
3. 3.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a pencil and tape (d) a balloon
4. 4.⚖️ 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
5. 5.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 16 seconds?
6. 6.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?
7. 7.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
8. 8.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) 10 is a lucky number (c) it is more fun (d) one swing is too slow
9. 9.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 51 seconds?
10. 10.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a heavy nut or washer (d) a balloon
12. 12.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) stopped (d) slower
13. 13.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) gravity (d) the wind
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “how far we pull it back”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.⚖️ 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
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) True (b) False
17. 17.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
18. 18.🛟 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
19. 19.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
20. 20.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a balloon (c) a pencil and tape (d) a magnet
21. 21.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a string (c) a stopwatch (d) a heavy nut or washer
23. 23.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a mirror (d) a pencil and tape
24. 24.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
25. 25.True or false: a mirror is needed for the pendulum. (a) False (b) True
26. 26.⚖️ 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
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
29. 29.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
30. 30.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
31. 31.⚖️ 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
32. 32.⚖️ 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) True (b) False
33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a heavy nut or washer (d) a magnet
34. 34.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
35. 35.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) about the same (c) much slower (d) it cannot swing
36. 36.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) no, hardly at all (c) yes, much slower (d) it stops swinging
37. 37.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a sundial (c) a digital watch (d) a grandfather clock
38. 38.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a heavy brick (d) a small nut or washer
39. 39.⚖️ 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
40. 40.True or false: a magnet is not needed for the pendulum. (a) True (b) False

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