Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 776 · 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? True or false: the string length is kept the same. (a) False (b) True
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a ruler (c) a heavy nut or washer (d) a string
3. 3.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
4. 4.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a longer string (c) a shorter string (d) a heavier bob
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) time for 10 swings (b) the weight of the bob (c) how far we pull it back (d) the string length
6. 6.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
7. 7.🧺 Which of these is not needed for the pendulum? (a) a string (b) a heavy nut or washer (c) a pencil and tape (d) a mirror
8. 8.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a balloon (c) a battery cell (d) a mirror
9. 9.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) it cannot swing (d) much slower
10. 10.🔮 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
11. 11.⚖️ 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
12. 12.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a small nut or washer (d) a heavy brick
13. 13.⚖️ 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
14. 14.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 14 seconds?
15. 15.⚖️ 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
16. 16.⚖️ 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
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a pencil and tape (c) a string (d) a heavy nut or washer
18. 18.True or false: a battery cell is needed for the pendulum. (a) True (b) False
19. 19.True or false: a balloon is needed for the pendulum. (a) True (b) False
20. 20.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) the bob could hit you (c) it is wet (d) it is magnetic
21. 21.🕰️ 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
22. 22.⚖️ 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 change it (c) we keep it the same
23. 23.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
24. 24.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the string (c) the wind (d) gravity
25. 25.⚖️ 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
26. 26.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 48 seconds?
27. 27.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
28. 28.True or false: a magnet is needed for the pendulum. (a) True (b) False
29. 29.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
30. 30.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
31. 31.True or false: a mirror is needed for the pendulum. (a) True (b) False
32. 32.⚖️ 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
33. 33.True or false: a magnet is not needed for the pendulum. (a) False (b) True
34. 34.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) True (b) False
36. 36.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more accurate (c) one swing is too slow (d) it is more fun
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) False (b) True
38. 38.⚖️ 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 weight of the bob (c) the string length
39. 39.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 21 seconds?
40. 40.⚖️ 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

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