Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 280 · 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 what we measure? (a) the weight of the bob (b) how far we pull it back (c) time for 10 swings (d) the string length
2. 2.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a magnet (d) a pencil and tape
4. 4.⚖️ 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 change it (c) we measure it
5. 5.True or false: a ruler is not needed for the pendulum. (a) False (b) True
6. 6.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
7. 7.⚖️ 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
8. 8.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
9. 9.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) stopped (c) heavier (d) quicker
10. 10.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a stopwatch (c) yeast (d) a balloon
11. 11.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
12. 12.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) 10 is a lucky number (c) one swing is too slow (d) it is more fun
13. 13.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it doubles (c) it halves (d) it stays the same
14. 14.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) it is magnetic (d) the bob could hit you
15. 15.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
16. 16.⚖️ 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
17. 17.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a heavy brick (c) a small nut or washer (d) a glass bottle
18. 18.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a heavier bob (c) a longer string (d) a lighter bob
19. 19.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a battery cell (d) a pencil and tape
20. 20.⚖️ 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
21. 21.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is kept the same. (a) True (b) False
22. 22.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
23. 23.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
24. 24.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a mirror (c) a battery cell (d) turmeric powder
25. 25.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
26. 26.True or false: a mirror is not needed for the pendulum. (a) False (b) True
27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a stopwatch (c) a ruler (d) a pencil and tape
28. 28.True or false: a magnet is needed for the pendulum. (a) True (b) False
29. 29.True or false: a string is not needed for the pendulum. (a) False (b) True
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a balloon (c) a string (d) a ruler
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) the string length (c) how far we pull it back
32. 32.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
33. 33.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) gravity (c) the string (d) the wind
34. 34.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
35. 35.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
36. 36.⚖️ 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
37. 37.⚖️ 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
38. 38.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
39. 39.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a string (c) a balloon (d) yeast
40. 40.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) turmeric powder (c) a string (d) a heavy nut or washer

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