Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 991 · 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 yeast for the pendulum? (a) needed (b) not needed
2. 2.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much slower (c) yes, much faster (d) it stops swinging
3. 3.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the string length (b) the same hook (c) the weight of the bob (d) time for 10 swings
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) slower (d) heavier
7. 7.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
8. 8.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) yeast (c) a mirror (d) a magnet
9. 9.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) it cannot swing (d) much faster
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) how far we pull it back (c) time for 10 swings (d) the string length
11. 11.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) yeast (c) a stopwatch (d) a string
12. 12.⚖️ 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
13. 13.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) a stopwatch (d) a balloon
14. 14.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
15. 15.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the string (c) the wind (d) gravity
16. 16.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) it is magnetic (d) the bob could hit you
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a balloon (d) a heavy nut or washer
18. 18.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a magnet (c) a heavy nut or washer (d) a battery cell
19. 19.⚖️ 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
20. 20.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a heavy nut or washer (d) a mirror
21. 21.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
22. 22.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
23. 23.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it doubles (c) it becomes 4 times (d) it halves
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a mirror (c) a string (d) a stopwatch
25. 25.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
26. 26.True or false: a magnet is not needed for the pendulum. (a) True (b) False
27. 27.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
28. 28.⚖️ 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
29. 29.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a magnet (d) a heavy nut or washer
31. 31.⚖️ 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 weight of the bob (c) time for 10 swings
32. 32.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a magnet (c) turmeric powder (d) a balloon
33. 33.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
34. 34.True or false: a string is not needed for the pendulum. (a) False (b) True
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) False (b) True
36. 36.⚖️ 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
37. 37.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a small nut or washer (c) a heavy brick (d) a glass bottle
38. 38.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
39. 39.True or false: a battery cell is needed for the pendulum. (a) False (b) True
40. 40.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?

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