Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 124 · 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.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a string (c) a ruler (d) a heavy nut or washer
2. 2.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it stays the same (c) it becomes 4 times (d) it halves
3. 3.⚖️ 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
4. 4.⚖️ 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
5. 5.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
6. 6.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
7. 7.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a longer string (c) a lighter bob (d) a shorter string
8. 8.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) heavier (d) slower
9. 9.⚖️ 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) time for 10 swings (c) the same hook (d) how far we pull it back
10. 10.⚖️ 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) the string length (c) time for 10 swings (d) how far we pull it back
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a heavy nut or washer (d) a battery cell
12. 12.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is hot (d) it is wet
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is kept the same. (a) False (b) True
14. 14.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
15. 15.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) it stops swinging (c) yes, much faster (d) no, hardly at all
16. 16.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a magnet (c) a heavy nut or washer (d) a pencil and tape
18. 18.🕰️ A pendulum makes 15 swings in 30 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 change it (b) we keep it the same (c) we measure it
20. 20.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a stopwatch (d) yeast
21. 21.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much slower (c) much faster (d) about the same
22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) yeast (c) a heavy nut or washer (d) a ruler
23. 23.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
24. 24.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a glass bottle (d) a small nut or washer
25. 25.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) a ruler (d) a magnet
26. 26.⚖️ 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
27. 27.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
28. 28.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
31. 31.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
32. 32.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
33. 33.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a stopwatch (c) a balloon (d) a heavy nut or washer
34. 34.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a battery cell (d) a stopwatch
35. 35.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
36. 36.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) magnetism (c) gravity (d) the string
37. 37.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
38. 38.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) it is more fun (c) 10 is a lucky number (d) it is more accurate
39. 39.True or false: a magnet is not needed for the pendulum. (a) True (b) False
40. 40.🧺 Which of these is needed for the pendulum? (a) yeast (b) a pencil and tape (c) a balloon (d) a battery cell

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