Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 728 · 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 weight of the bob is kept the same. (a) True (b) False
2. 2.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
4. 4.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
5. 5.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
6. 6.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
7. 7.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
8. 8.🧺 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
9. 9.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a balloon (d) a ruler
10. 10.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 9 seconds?
11. 11.🕰️ 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
12. 12.⚖️ 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
13. 13.⚖️ 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 change it (c) we measure it
14. 14.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
15. 15.True or false: a string is not needed for the pendulum. (a) True (b) False
16. 16.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) the bob could hit you (c) it is magnetic (d) it is wet
17. 17.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a stopwatch (d) turmeric powder
18. 18.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a lighter bob (c) a heavier bob (d) a shorter string
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) yeast (c) a stopwatch (d) a ruler
20. 20.⚖️ 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
21. 21.🧺 Which of these is needed for the pendulum? (a) a string (b) a battery cell (c) turmeric powder (d) yeast
22. 22.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
23. 23.🧺 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 ruler
24. 24.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) the string (d) gravity
25. 25.⚖️ 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
26. 26.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) heavier (d) slower
27. 27.⚖️ 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) how far we pull it back (c) the same hook (d) the string length
28. 28.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
29. 29.True or false: a magnet is not needed for the pendulum. (a) False (b) True
30. 30.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
31. 31.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) about the same (c) much faster (d) much slower
32. 32.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 28 seconds?
33. 33.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a sharp tool (d) a small nut or washer
34. 34.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
35. 35.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a heavy nut or washer (c) a stopwatch (d) a string
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) the weight of the bob (c) the same hook (d) time for 10 swings
37. 37.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
38. 38.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a mirror (c) yeast (d) a magnet
39. 39.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it doubles (c) it becomes 4 times (d) it stays the same
40. 40.⚖️ 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

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