Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 221 · 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 turmeric powder for the pendulum? (a) needed (b) not needed
2. 2.⚖️ 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
3. 3.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) the same hook (c) the string length (d) time for 10 swings
5. 5.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a string (c) a heavy nut or washer (d) a pencil and tape
6. 6.⚖️ 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
7. 7.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
8. 8.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is wet (c) it is hot (d) it is magnetic
9. 9.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
10. 10.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
11. 11.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a pencil and tape (c) a balloon (d) turmeric powder
12. 12.⚖️ 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
13. 13.True or false: a battery cell is needed for the pendulum. (a) True (b) False
14. 14.True or false: yeast is needed for the pendulum. (a) True (b) False
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 doubles (d) it becomes 4 times
16. 16.🧺 Which of these is needed for the pendulum? (a) a magnet (b) turmeric powder (c) yeast (d) a ruler
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a ruler (c) a stopwatch (d) a heavy nut or washer
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a heavy nut or washer (c) a ruler (d) a string
22. 22.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
23. 23.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a small nut or washer (d) a sharp tool
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a ruler (c) a heavy nut or washer (d) a stopwatch
25. 25.True or false: a balloon is not needed for the pendulum. (a) False (b) True
26. 26.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a stopwatch (c) yeast (d) a mirror
27. 27.True or false: a magnet is needed for the pendulum. (a) False (b) True
28. 28.True or false: a string is needed for the pendulum. (a) False (b) True
29. 29.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much slower (c) much faster (d) about the same
30. 30.🧺 Which of these is needed for the pendulum? (a) yeast (b) a balloon (c) a string (d) turmeric powder
31. 31.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) no, hardly at all (c) yes, much faster (d) yes, much slower
32. 32.⚖️ 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 keep it the same (c) we measure it
33. 33.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
34. 34.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
35. 35.⚖️ 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
36. 36.🧺 Which of these is not needed for the pendulum? (a) a string (b) yeast (c) a pencil and tape (d) a stopwatch
37. 37.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
38. 38.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a longer string (c) a shorter string (d) a lighter bob
39. 39.⚖️ 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 measure it (c) we keep it the same
40. 40.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?

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