Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 282 · 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.True or false: a mirror is not needed for the pendulum. (a) False (b) True
2. 2.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) the bob could hit you (d) it is magnetic
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) the weight of the bob (c) how far we pull it back (d) time for 10 swings
4. 4.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
5. 5.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
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 change it (b) we measure it (c) we keep it the same
7. 7.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
8. 8.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a heavy nut or washer (d) a magnet
9. 9.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) slower (c) quicker (d) heavier
10. 10.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
11. 11.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 36 seconds?
12. 12.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a stopwatch (c) a string (d) a heavy nut or washer
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) time for 10 swings (c) how far we pull it back (d) the string length
14. 14.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a phone (c) a digital watch (d) a sundial
15. 15.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
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.⚖️ 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
18. 18.⚖️ 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
19. 19.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
20. 20.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) it cannot swing (c) much faster (d) about the same
21. 21.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
22. 22.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a string (c) a battery cell (d) turmeric powder
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) how far we pull it back (b) the string length (c) time for 10 swings
24. 24.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) yes, much slower (c) it stops swinging (d) no, hardly at all
25. 25.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a small nut or washer (c) a heavy brick (d) a sharp tool
27. 27.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
28. 28.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a balloon (c) a stopwatch (d) a magnet
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a string (d) turmeric powder
30. 30.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
31. 31.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 40 seconds?
32. 32.⚖️ 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) True (b) False
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is kept the same. (a) False (b) True
34. 34.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
35. 35.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) yeast (d) a stopwatch
37. 37.🔮 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 halves (d) it becomes 4 times
38. 38.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) a magnet (d) a stopwatch
39. 39.⚖️ 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) False (b) True
40. 40.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) yeast (c) a stopwatch (d) a pencil and tape

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