Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 875 · 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.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) heavier (d) stopped
2. 2.⚖️ 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) False (b) True
3. 3.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a heavy nut or washer (c) turmeric powder (d) yeast
4. 4.⚖️ 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 change it (b) we measure it (c) we keep it the same
5. 5.True or false: a balloon is not needed for the pendulum. (a) False (b) True
6. 6.🔮 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
7. 7.True or false: a ruler is not needed for the pendulum. (a) True (b) False
8. 8.⚖️ 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) False (b) True
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
10. 10.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
11. 11.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) the bob could hit you (d) it is magnetic
12. 12.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a longer string (c) a lighter bob (d) a shorter string
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we change it (c) we measure it
15. 15.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) magnetism (c) the string (d) the wind
16. 16.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a heavy nut or washer (c) a stopwatch (d) a string
18. 18.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) it stops swinging (c) yes, much slower (d) no, hardly at all
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a string (c) a heavy nut or washer (d) a stopwatch
20. 20.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 16 seconds?
21. 21.🧺 Which of these is needed for the pendulum? (a) yeast (b) a mirror (c) a stopwatch (d) a balloon
22. 22.True or false: a string is not needed for the pendulum. (a) True (b) False
23. 23.True or false: a ruler is needed for the pendulum. (a) False (b) True
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) True (b) False
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) yeast (c) a ruler (d) a heavy nut or washer
26. 26.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
27. 27.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) turmeric powder (d) a pencil and tape
28. 28.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
29. 29.⚖️ 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
30. 30.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a balloon (c) a string (d) a heavy nut or washer
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a balloon (c) a heavy nut or washer (d) a pencil and tape
32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) how far we pull it back (c) the string length (d) time for 10 swings
33. 33.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
34. 34.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
35. 35.⚖️ 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) the string length (c) how far we pull it back
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) the weight of the bob
37. 37.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a mirror (c) yeast (d) a string
38. 38.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
39. 39.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
40. 40.⚖️ 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

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