Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 679 · 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.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) slower (d) stopped
2. 2.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a small nut or washer (c) a glass bottle (d) a heavy brick
3. 3.True or false: a balloon is needed for the pendulum. (a) True (b) False
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a string (c) a stopwatch (d) a heavy nut or washer
5. 5.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
6. 6.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
7. 7.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a heavier bob (d) a lighter bob
8. 8.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is hot (c) it is magnetic (d) it is wet
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) time for 10 swings (c) the same hook (d) how far we pull it back
10. 10.🧺 Which of these is needed for the pendulum? (a) a string (b) a magnet (c) a battery cell (d) yeast
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a stopwatch (c) a heavy nut or washer (d) a ruler
12. 12.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
13. 13.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
14. 14.True or false: a mirror is needed for the pendulum. (a) True (b) False
15. 15.True or false: a magnet is not needed for the pendulum. (a) True (b) False
16. 16.🧺 Which of these is needed for the pendulum? (a) yeast (b) a mirror (c) a stopwatch (d) turmeric powder
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) True (b) False
18. 18.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
19. 19.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 16 seconds?
20. 20.True or false: yeast is needed for the pendulum. (a) False (b) True
21. 21.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
22. 22.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
23. 23.⚖️ 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
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) time for 10 swings (b) the string length (c) the same hook (d) the weight of the bob
25. 25.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a stopwatch (c) a heavy nut or washer (d) a balloon
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a mirror (c) a string (d) a ruler
27. 27.⚖️ 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
28. 28.True or false: a string 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 weight of the bob”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
31. 31.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a mirror (d) a stopwatch
32. 32.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) about the same (c) much slower (d) it cannot swing
33. 33.🧺 Which of these is needed for the pendulum? (a) yeast (b) a magnet (c) a battery cell (d) a heavy nut or washer
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a balloon (c) a ruler (d) a stopwatch
35. 35.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a magnet (c) a string (d) a stopwatch
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) False (b) True
37. 37.🧺 Which of these is needed for the pendulum? (a) yeast (b) a ruler (c) a balloon (d) turmeric powder
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) time for 10 swings (c) the same hook
39. 39.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it doubles (c) it stays the same (d) it becomes 4 times
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) the string length (c) time for 10 swings

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