Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 782 · 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: time for 10 swings is what we measure. (a) True (b) False
2. 2.True or false: a balloon is not needed for the pendulum. (a) True (b) False
3. 3.⚖️ 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 keep it the same (c) we measure it
4. 4.⚖️ 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
5. 5.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
6. 6.True or false: a ruler is needed for the pendulum. (a) True (b) False
7. 7.True or false: a string is needed for the pendulum. (a) True (b) False
8. 8.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a balloon (d) a ruler
9. 9.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
10. 10.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
11. 11.⚖️ 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
12. 12.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a mirror (c) a balloon (d) a battery cell
13. 13.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a sharp tool (c) a glass bottle (d) a heavy brick
14. 14.⚖️ 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
15. 15.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a mirror (c) a magnet (d) a ruler
16. 16.⚖️ 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
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 mirror (d) a heavy nut or washer
18. 18.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
19. 19.⚖️ 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) the string length (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 weight of the bob (b) the string length (c) time for 10 swings
21. 21.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) slower (c) quicker (d) heavier
22. 22.True or false: a string is not needed for the pendulum. (a) True (b) False
23. 23.True or false: a mirror is not needed for the pendulum. (a) False (b) True
24. 24.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
25. 25.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a balloon (c) a heavy nut or washer (d) a magnet
26. 26.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a sundial (c) a grandfather clock (d) a phone
27. 27.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 51 seconds?
28. 28.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
29. 29.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
30. 30.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 16 seconds?
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.⚖️ 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) how far we pull it back
33. 33.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) it is wet (d) the bob could hit you
34. 34.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) much faster (d) it cannot swing
35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a battery cell (c) a string (d) a pencil and tape
36. 36.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
37. 37.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 13 seconds?
38. 38.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
39. 39.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it stays the same (c) it becomes 4 times (d) it halves
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is the one thing we change. (a) False (b) True

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