Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 768 · 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 what we measure? (a) the weight of the bob (b) how far we pull it back (c) the string length (d) time for 10 swings
2. 2.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
3. 3.⚖️ 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) False (b) True
4. 4.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
5. 5.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a ruler (c) a mirror (d) a string
6. 6.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) yeast (c) a balloon (d) a pencil and tape
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a balloon (d) a stopwatch
8. 8.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
9. 9.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
10. 10.🕰️ A pendulum makes 5 swings in 10 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) it is magnetic (d) the bob could hit you
12. 12.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) 10 is a lucky number (c) it is more accurate (d) it is more fun
13. 13.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a balloon (c) a mirror (d) a magnet
14. 14.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?
15. 15.🧺 Which of these is needed for the pendulum? (a) yeast (b) a mirror (c) a magnet (d) a string
16. 16.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it halves (c) it stays the same (d) it becomes 4 times
17. 17.True or false: a mirror is not needed for the pendulum. (a) False (b) True
18. 18.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
19. 19.⚖️ 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) time for 10 swings (c) how far we pull it back (d) the string length
20. 20.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
21. 21.True or false: a string is not needed for the pendulum. (a) True (b) False
22. 22.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) it cannot swing (c) much faster (d) about the same
23. 23.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a battery cell (c) a string (d) a pencil and tape
26. 26.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) yeast (d) a pencil and tape
28. 28.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
29. 29.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
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 heavy nut or washer (d) a magnet
31. 31.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) the wind (c) magnetism (d) gravity
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a mirror (c) a ruler (d) a heavy nut or washer
33. 33.⚖️ 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 keep it the same (c) we measure it
34. 34.⚖️ 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 keep it the same (c) we change it
35. 35.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a heavy brick (c) a small nut or washer (d) a glass bottle
36. 36.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
37. 37.⚖️ 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
38. 38.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much slower (c) it stops swinging (d) yes, much faster
39. 39.True or false: a mirror is needed for the pendulum. (a) False (b) True
40. 40.🧺 Which of these is needed for the pendulum? (a) a balloon (b) turmeric powder (c) a ruler (d) a mirror

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