Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 433 · 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.⚖️ 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
2. 2.⚖️ 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
3. 3.⚖️ 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
4. 4.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
5. 5.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) slower (d) stopped
6. 6.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
7. 7.True or false: a magnet is needed for the pendulum. (a) False (b) True
8. 8.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the same hook (c) the weight of the bob (d) time for 10 swings
10. 10.True or false: yeast is not needed for the pendulum. (a) False (b) True
11. 11.⚖️ 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
12. 12.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
13. 13.⚖️ 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
14. 14.True or false: yeast is needed for the pendulum. (a) True (b) False
15. 15.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
16. 16.⚖️ 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) how far we pull it back (c) the string length
17. 17.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it becomes 4 times (c) it doubles (d) it halves
18. 18.True or false: a mirror is not needed for the pendulum. (a) False (b) True
19. 19.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) turmeric powder (c) a battery cell (d) a mirror
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a stopwatch (d) turmeric powder
21. 21.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more fun (c) it is more accurate (d) one swing is too slow
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a glass bottle (c) a sharp tool (d) a heavy brick
24. 24.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
25. 25.⚖️ 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
26. 26.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 13 seconds?
27. 27.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a lighter bob (d) a heavier bob
28. 28.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a pencil and tape (c) a heavy nut or washer (d) a stopwatch
30. 30.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
31. 31.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
32. 32.⚖️ 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
33. 33.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) a mirror (d) a string
34. 34.⚖️ 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
35. 35.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
36. 36.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
37. 37.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) gravity (d) the string
38. 38.🕰️ 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
39. 39.True or false: a magnet is not needed for the pendulum. (a) False (b) True
40. 40.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) turmeric powder (c) a string (d) a stopwatch

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