Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 138 · 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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a balloon (d) a ruler
2. 2.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a shorter string (c) a longer string (d) a heavier bob
3. 3.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a string (c) a heavy nut or washer (d) a pencil and tape
4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the string length (c) time for 10 swings (d) the same hook
5. 5.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) slower (c) heavier (d) quicker
6. 6.⚖️ 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
7. 7.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) a ruler (d) turmeric powder
8. 8.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much faster (c) no, hardly at all (d) yes, much slower
9. 9.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a glass bottle (d) a sharp tool
10. 10.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) a string (d) a battery cell
11. 11.True or false: a balloon is not needed for the pendulum. (a) True (b) False
12. 12.🔮 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
13. 13.⚖️ 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
14. 14.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the string (c) gravity (d) the wind
15. 15.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) it is more accurate (c) 10 is a lucky number (d) one swing is too slow
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) yeast (d) a heavy nut or washer
17. 17.True or false: a ruler is not needed for the pendulum. (a) True (b) False
18. 18.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
19. 19.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 26 seconds?
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
21. 21.⚖️ 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
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) time for 10 swings (c) the string length (d) the weight of the bob
23. 23.⚖️ 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
24. 24.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) turmeric powder (c) a mirror (d) a battery cell
25. 25.⚖️ 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
26. 26.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) False (b) True
28. 28.⚖️ 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 measure it (b) we change it (c) we keep it the same
29. 29.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it halves (c) it doubles (d) it becomes 4 times
30. 30.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a heavy nut or washer (d) turmeric powder
31. 31.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
32. 32.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) yeast (d) a heavy nut or washer
33. 33.⚖️ 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
34. 34.True or false: a string is needed for the pendulum. (a) False (b) True
35. 35.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
36. 36.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
37. 37.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
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 string length (c) the weight of the bob
39. 39.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 30 seconds?
40. 40.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False

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