Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 243 · 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? What do we do with “the weight of the bob”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Which of these is needed for the pendulum? (a) a mirror (b) yeast (c) a ruler (d) a magnet
3. 3.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 21 seconds?
4. 4.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is magnetic (c) it is hot (d) the bob could hit you
5. 5.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
6. 6.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
7. 7.True or false: a string is needed for the pendulum. (a) True (b) False
8. 8.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
9. 9.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 18 seconds?
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 same hook (c) how far we pull it back (d) the string length
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
12. 12.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a pencil and tape (c) yeast (d) a balloon
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the same hook (c) the weight of the bob (d) time for 10 swings
14. 14.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
15. 15.True or false: a magnet is needed for the pendulum. (a) False (b) True
16. 16.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a balloon (c) a string (d) a stopwatch
17. 17.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a stopwatch (d) a battery cell
19. 19.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) stopped (d) quicker
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.⚖️ 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 measure it (c) we change it
22. 22.🔮 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 becomes 4 times (d) it doubles
23. 23.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) a ruler (d) a magnet
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a heavy nut or washer (d) a balloon
25. 25.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 16 seconds?
26. 26.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a shorter string (c) a longer string (d) a lighter bob
27. 27.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 18 seconds?
28. 28.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
29. 29.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
30. 30.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
31. 31.⚖️ 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) how far we pull it back (c) the string length
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a pencil and tape (c) a heavy nut or washer (d) a stopwatch
33. 33.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) it cannot swing (d) about the same
34. 34.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a ruler (c) a string (d) yeast
36. 36.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a sharp tool (d) a glass bottle
37. 37.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
38. 38.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 16 seconds?
39. 39.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a heavy nut or washer (c) a magnet (d) yeast
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) True (b) False

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