Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 379 · 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.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a phone (c) a sundial (d) a grandfather clock
2. 2.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) the bob could hit you (d) it is wet
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a balloon (d) a heavy nut or washer
4. 4.True or false: a balloon is needed for the pendulum. (a) False (b) True
5. 5.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a magnet (c) turmeric powder (d) a mirror
6. 6.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “how far we pull it back”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.⚖️ 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
9. 9.True or false: a balloon is not needed for the pendulum. (a) False (b) True
10. 10.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a ruler (d) yeast
11. 11.🧺 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 mirror
12. 12.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) stopped (d) heavier
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 string length (b) the weight of the bob (c) the same hook (d) how far we pull it back
14. 14.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a battery cell (c) turmeric powder (d) a balloon
15. 15.⚖️ 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
16. 16.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a magnet (d) a heavy nut or washer
18. 18.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
19. 19.⚖️ 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) how far we pull it back (d) the same hook
20. 20.⚖️ 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) how far we pull it back
21. 21.🛟 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
22. 22.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
23. 23.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the wind (c) the string (d) gravity
24. 24.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
25. 25.🧺 Which of these is needed for the pendulum? (a) a magnet (b) yeast (c) a mirror (d) a string
26. 26.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a battery cell (d) a stopwatch
27. 27.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
28. 28.⚖️ 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) False (b) True
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a heavy nut or washer (c) a stopwatch (d) a pencil and tape
30. 30.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
31. 31.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) yes, much slower (c) yes, much faster (d) no, hardly at all
32. 32.⚖️ 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
33. 33.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
34. 34.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is kept the same. (a) True (b) False
36. 36.True or false: a mirror is not needed for the pendulum. (a) False (b) True
37. 37.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it becomes 4 times (c) it stays the same (d) it doubles
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
39. 39.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
40. 40.🔮 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 slower (d) much faster

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