Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 323 · 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 pencil and tape for the pendulum? (a) needed (b) not needed
2. 2.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much faster (c) no, hardly at all (d) yes, much slower
3. 3.⚖️ 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
4. 4.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) about the same (c) much slower (d) much faster
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) time for 10 swings (c) the string length
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a heavy nut or washer (c) a balloon (d) a ruler
7. 7.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
8. 8.⚖️ 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 change it (c) we measure it
9. 9.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) a heavy nut or washer (d) a magnet
10. 10.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
11. 11.🧺 Which of these is needed for the pendulum? (a) a magnet (b) turmeric powder (c) a string (d) a battery cell
12. 12.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
13. 13.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) yeast (d) a stopwatch
14. 14.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) stopped (d) slower
15. 15.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a ruler (d) a balloon
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the weight of the bob (b) how far we pull it back (c) the same hook (d) the string length
17. 17.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it doubles (d) it becomes 4 times
18. 18.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a heavy brick (d) a small nut or washer
19. 19.🕰️ A pendulum makes 10 swings in 20 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 “time for 10 swings”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.🛟 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
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
23. 23.⚖️ 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
24. 24.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a balloon (c) a mirror (d) a battery cell
25. 25.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
26. 26.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 30 seconds?
27. 27.🕰️ 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
28. 28.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
29. 29.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) the string (d) gravity
30. 30.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
31. 31.True or false: a mirror is needed for the pendulum. (a) False (b) True
32. 32.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
33. 33.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a heavier bob (d) a lighter bob
34. 34.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
35. 35.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 12 seconds?
36. 36.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
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 mirror (d) a ruler
38. 38.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
39. 39.⚖️ 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
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) the string length (c) time for 10 swings (d) the weight of the bob

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