Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 231 · 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.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
2. 2.🧺 Which of these is needed for the pendulum? (a) a mirror (b) yeast (c) a battery cell (d) a stopwatch
3. 3.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
4. 4.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
5. 5.⚖️ 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 weight of the bob
6. 6.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) slower (d) heavier
7. 7.⚖️ 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) True (b) False
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a balloon (c) a ruler (d) a stopwatch
9. 9.⚖️ 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 measure it (b) we change it (c) we keep it the same
10. 10.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
11. 11.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) the wind (d) gravity
12. 12.⚖️ 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 keep it the same (c) we change it
13. 13.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
14. 14.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 30 seconds?
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) the string length (c) time for 10 swings
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a pencil and tape (d) a battery cell
17. 17.⚖️ 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
18. 18.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
19. 19.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it halves (c) it stays the same (d) it doubles
20. 20.🧺 Which of these is not needed for the pendulum? (a) a string (b) a balloon (c) a ruler (d) a pencil and tape
21. 21.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the weight of the bob (c) time for 10 swings (d) the same hook
23. 23.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
25. 25.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) a heavy nut or washer (d) a mirror
26. 26.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is magnetic (c) it is wet (d) it is hot
27. 27.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) about the same (d) it cannot swing
28. 28.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
29. 29.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a sundial (c) a digital watch (d) a phone
30. 30.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a longer string (c) a shorter string (d) a heavier bob
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
32. 32.⚖️ 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
33. 33.True or false: yeast is needed for the pendulum. (a) True (b) False
34. 34.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a heavy nut or washer (c) a pencil and tape (d) a ruler
35. 35.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
36. 36.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 38 seconds?
37. 37.⚖️ 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) True (b) False
38. 38.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
39. 39.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a heavy nut or washer (d) a magnet

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