Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 579 · 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? True or false: the same hook is the one thing we change. (a) False (b) True
2. 2.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 15 seconds?
3. 3.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a heavy nut or washer (c) a battery cell (d) a magnet
4. 4.True or false: a string is needed for the pendulum. (a) True (b) False
5. 5.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a string (c) a pencil and tape (d) a magnet
6. 6.⚖️ 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 keep it the same (c) we change it
7. 7.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) it cannot swing (c) much faster (d) much slower
8. 8.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) 10 is a lucky number (c) one swing is too slow (d) it is more fun
9. 9.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) True (b) False
10. 10.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a sharp tool (d) a small nut or washer
11. 11.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it halves (c) it becomes 4 times (d) it stays the same
12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a stopwatch (d) a battery cell
13. 13.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) the bob could hit you (c) it is wet (d) it is hot
14. 14.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) a stopwatch (d) a mirror
15. 15.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
16. 16.True or false: a ruler is needed for the pendulum. (a) True (b) False
17. 17.⚖️ 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 keep it the same (c) we measure it
18. 18.True or false: a mirror is needed for the pendulum. (a) False (b) True
19. 19.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
20. 20.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 16 seconds?
21. 21.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) slower (d) stopped
22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a magnet (c) a pencil and tape (d) a heavy nut or washer
23. 23.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
24. 24.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) turmeric powder (c) a ruler (d) a string
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) how far we pull it back (c) the weight of the bob (d) time for 10 swings
26. 26.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) the string (c) gravity (d) magnetism
27. 27.⚖️ 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) True (b) False
28. 28.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.⚖️ 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 weight of the bob (c) how far we pull it back (d) the string length
30. 30.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
31. 31.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a pencil and tape (c) a balloon (d) a heavy nut or washer
32. 32.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
33. 33.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a ruler (d) turmeric powder
35. 35.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
36. 36.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
37. 37.⚖️ 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
38. 38.True or false: a magnet is needed for the pendulum. (a) True (b) False
39. 39.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
40. 40.⚖️ 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

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