Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 978 · 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 wet (c) the bob could hit you (d) it is hot
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a mirror (d) a stopwatch
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) a ruler (d) turmeric powder
4. 4.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) the string (d) gravity
5. 5.🧺 Which of these is not needed for the pendulum? (a) turmeric powder (b) a heavy nut or washer (c) a ruler (d) a string
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a magnet (d) a string
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a string (c) a heavy nut or washer (d) a stopwatch
8. 8.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
9. 9.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
10. 10.⚖️ 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
11. 11.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) one swing is too slow (c) it is more accurate (d) it is more fun
12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a stopwatch (d) yeast
13. 13.⚖️ 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) how far we pull it back (c) the string length (d) the same hook
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) the same hook (c) the string length (d) the weight of the bob
15. 15.🔮 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
16. 16.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
17. 17.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
18. 18.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
19. 19.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) a magnet (d) a heavy nut or washer
20. 20.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a heavy nut or washer (c) a pencil and tape (d) a ruler
21. 21.⚖️ 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) True (b) False
22. 22.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) the weight of the bob (c) time for 10 swings
24. 24.True or false: a ruler is needed for the pendulum. (a) True (b) False
25. 25.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
26. 26.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
27. 27.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a balloon (c) a stopwatch (d) a mirror
28. 28.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) a battery cell (d) a pencil and tape
29. 29.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
30. 30.True or false: a battery cell is needed for the pendulum. (a) True (b) False
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.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we measure it (c) we change it
33. 33.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a string (c) a ruler (d) a pencil and tape
34. 34.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
35. 35.True or false: a ruler is not needed for the pendulum. (a) True (b) False
36. 36.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
37. 37.⚖️ 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
38. 38.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a glass bottle (c) a heavy brick (d) a sharp tool
39. 39.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a ruler (d) a balloon
40. 40.True or false: a string is not needed for the pendulum. (a) False (b) True

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