Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 387 · 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.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) it is wet (d) the bob could hit you
2. 2.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
3. 3.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
4. 4.⚖️ 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
5. 5.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) heavier (d) slower
6. 6.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a stopwatch (c) a mirror (d) a ruler
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a stopwatch (c) a pencil and tape (d) a ruler
8. 8.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
9. 9.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a stopwatch (c) a ruler (d) turmeric powder
10. 10.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) a heavy nut or washer (d) a magnet
11. 11.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a stopwatch (c) yeast (d) a string
12. 12.🧺 Which of these is needed for the pendulum? (a) a balloon (b) turmeric powder (c) a ruler (d) a magnet
13. 13.⚖️ 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
14. 14.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) much slower (d) it cannot swing
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we keep it the same (c) we change it
16. 16.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the wind (c) magnetism (d) the string
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a battery cell (d) a heavy nut or washer
18. 18.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a sharp tool (c) a heavy brick (d) a small nut or washer
19. 19.⚖️ 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) True (b) False
20. 20.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
21. 21.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
22. 22.⚖️ 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 same hook (c) time for 10 swings (d) the weight of the bob
23. 23.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 10 seconds?
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the string length (b) time for 10 swings (c) the weight of the bob (d) how far we pull it back
25. 25.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) a heavy nut or washer (d) a battery cell
26. 26.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) the string length (c) time for 10 swings
27. 27.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
28. 28.True or false: a battery cell is needed for the pendulum. (a) True (b) False
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
31. 31.⚖️ 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
32. 32.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a heavier bob (c) a lighter bob (d) a longer string
33. 33.🔮 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
34. 34.⚖️ 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
35. 35.🧺 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 stopwatch
36. 36.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) turmeric powder (c) a pencil and tape (d) a heavy nut or washer
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings
39. 39.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) yeast (c) a stopwatch (d) a heavy nut or washer

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