Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 272 · 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? Which of these is kept the same? (a) the weight of the bob (b) time for 10 swings (c) the string length
2. 2.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
3. 3.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
4. 4.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
5. 5.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
6. 6.⚖️ 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
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a magnet (c) a stopwatch (d) a heavy nut or washer
8. 8.🛟 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
9. 9.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) it cannot swing (d) about the same
10. 10.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the same hook (b) the weight of the bob (c) time for 10 swings (d) the string length
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) the string length (c) time for 10 swings (d) the weight of the bob
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a mirror (c) a heavy nut or washer (d) a ruler
15. 15.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) quicker (d) stopped
16. 16.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
17. 17.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) a heavy nut or washer (d) a mirror
18. 18.⚖️ 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
19. 19.True or false: a mirror is not needed for the pendulum. (a) False (b) True
20. 20.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a small nut or washer (d) a heavy brick
21. 21.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
22. 22.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
23. 23.⚖️ 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
24. 24.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
25. 25.⚖️ 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 change it (c) we keep it the same
26. 26.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) False (b) True
28. 28.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
29. 29.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) one swing is too slow (c) 10 is a lucky number (d) it is more fun
30. 30.🧺 Which of these is needed for the pendulum? (a) a string (b) a mirror (c) a battery cell (d) a magnet
31. 31.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 17 seconds?
32. 32.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
33. 33.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a heavy nut or washer (c) a pencil and tape (d) a ruler
34. 34.⚖️ 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
35. 35.⚖️ 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
36. 36.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
37. 37.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
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.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) a battery cell (d) a string
40. 40.⚖️ 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 keep it the same (b) we measure it (c) we change it

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