Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 987 · 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 mirror for the pendulum? (a) not needed (b) needed
2. 2.⚖️ 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
3. 3.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
4. 4.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) heavier (c) slower (d) quicker
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) the string length (c) time for 10 swings
6. 6.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
7. 7.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) yeast (c) a mirror (d) a ruler
8. 8.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is hot (d) it is magnetic
9. 9.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) it is more accurate (c) one swing is too slow (d) 10 is a lucky number
10. 10.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a balloon (d) a pencil and tape
11. 11.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
12. 12.⚖️ 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
13. 13.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a glass bottle (c) a heavy brick (d) a sharp tool
14. 14.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a pencil and tape (c) a heavy nut or washer (d) yeast
15. 15.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) False (b) True
18. 18.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 38 seconds?
19. 19.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 16 seconds?
20. 20.🔮 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
21. 21.⚖️ 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 measure it (c) we change it
22. 22.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
23. 23.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a pencil and tape (c) a string (d) a heavy nut or washer
24. 24.⚖️ 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 keep it the same (b) we measure it (c) we change it
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) a stopwatch (d) a mirror
26. 26.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 40 seconds?
27. 27.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it doubles (c) it stays the same (d) it becomes 4 times
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) a string (d) a heavy nut or washer
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
30. 30.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 10 seconds?
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.⚖️ 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
33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) yeast (c) a string (d) a heavy nut or washer
34. 34.⚖️ 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) True (b) False
35. 35.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
36. 36.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
37. 37.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
38. 38.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much faster (c) yes, much slower (d) it stops swinging
39. 39.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
40. 40.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids