Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 698 · 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 a stopwatch for the pendulum? (a) needed (b) not needed
2. 2.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) quicker (c) stopped (d) heavier
3. 3.True or false: a ruler is needed for the pendulum. (a) True (b) False
4. 4.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
5. 5.🔮 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
6. 6.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a heavier bob (c) a longer string (d) a lighter bob
7. 7.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
8. 8.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
9. 9.True or false: yeast is not needed for the pendulum. (a) False (b) True
10. 10.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) gravity (c) the wind (d) magnetism
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a ruler (d) a balloon
12. 12.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
13. 13.⚖️ 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
14. 14.⚖️ 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
15. 15.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
16. 16.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) it stops swinging (c) no, hardly at all (d) yes, much faster
17. 17.⚖️ 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) the string length (d) the same hook
18. 18.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.True or false: a mirror is needed for the pendulum. (a) True (b) False
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) how far we pull it back
22. 22.⚖️ 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) the string length (c) the same hook (d) time for 10 swings
23. 23.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a magnet (c) a mirror (d) a heavy nut or washer
24. 24.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
25. 25.True or false: a balloon is not needed for the pendulum. (a) False (b) True
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a heavy nut or washer (d) a mirror
27. 27.🔮 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
28. 28.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
29. 29.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more fun (c) one swing is too slow (d) it is more accurate
30. 30.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a small nut or washer (d) a sharp tool
31. 31.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
32. 32.⚖️ 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
33. 33.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) turmeric powder (c) a pencil and tape (d) a magnet
34. 34.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a string (c) a magnet (d) a battery cell
35. 35.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 42 seconds?
36. 36.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a ruler (d) a magnet
38. 38.⚖️ 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
39. 39.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
40. 40.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?

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