Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 316 · 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.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a sharp tool (d) a small nut or washer
2. 2.🕰️ A pendulum makes 5 swings in 15 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 ruler (b) a heavy nut or washer (c) a balloon (d) a string
4. 4.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) the wind (d) gravity
5. 5.⚖️ 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
6. 6.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) True (b) False
8. 8.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is wet (c) it is hot (d) it is magnetic
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a magnet (c) a stopwatch (d) a heavy nut or washer
10. 10.🔮 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
11. 11.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it becomes 4 times (c) it stays the same (d) it doubles
12. 12.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
13. 13.⚖️ 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 weight of the bob (d) how far we pull it back
14. 14.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) time for 10 swings (c) the same hook (d) the string length
16. 16.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) yes, much faster (c) it stops swinging (d) no, hardly at all
17. 17.True or false: yeast is needed for the pendulum. (a) False (b) True
18. 18.🧺 Which of these is needed for the pendulum? (a) a magnet (b) turmeric powder (c) a heavy nut or washer (d) a battery cell
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a pencil and tape (d) turmeric powder
20. 20.True or false: a balloon is needed for the pendulum. (a) False (b) True
21. 21.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
22. 22.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
23. 23.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 18 seconds?
24. 24.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) yeast (d) a heavy nut or washer
25. 25.🕰️ 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) it is more accurate (d) 10 is a lucky number
26. 26.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a lighter bob (c) a shorter string (d) a heavier bob
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) the same hook (c) time for 10 swings
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) a stopwatch (d) turmeric powder
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a battery cell (d) a heavy nut or washer
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a heavy nut or washer (c) a pencil and tape (d) a string
32. 32.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
33. 33.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
34. 34.⚖️ 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
35. 35.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
36. 36.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) the string length (c) time for 10 swings
38. 38.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
39. 39.True or false: a string is needed for the pendulum. (a) False (b) True
40. 40.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True

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