Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 894 · 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? What do we do with “time for 10 swings”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
3. 3.True or false: a ruler is not needed for the pendulum. (a) True (b) False
4. 4.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a balloon (c) a stopwatch (d) a string
5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a battery cell (c) a heavy nut or washer (d) a stopwatch
6. 6.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
7. 7.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it doubles (c) it becomes 4 times (d) it stays the same
8. 8.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a balloon (c) yeast (d) a stopwatch
9. 9.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) magnetism (c) gravity (d) the string
10. 10.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
11. 11.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) it is wet (d) the bob could hit you
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) time for 10 swings (b) the string length (c) the weight of the bob (d) how far we pull it back
13. 13.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
14. 14.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 14 seconds?
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) turmeric powder (c) a heavy nut or washer (d) a ruler
16. 16.⚖️ 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 keep it the same (c) we change it
17. 17.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) it cannot swing (d) much slower
18. 18.True or false: a magnet is not needed for the pendulum. (a) True (b) False
19. 19.⚖️ 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
20. 20.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 13 seconds?
21. 21.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) it stops swinging (c) yes, much slower (d) yes, much faster
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we keep it the same (c) we measure it
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? Which of these is kept the same? (a) time for 10 swings (b) the string length (c) the weight of the bob
25. 25.🧺 Which of these is needed for the pendulum? (a) a string (b) turmeric powder (c) yeast (d) a magnet
26. 26.⚖️ 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
27. 27.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a battery cell (c) turmeric powder (d) a pencil and tape
28. 28.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a string (d) a battery cell
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) True (b) False
30. 30.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 20 seconds?
31. 31.🧺 Which of these is not needed for the pendulum? (a) a string (b) a ruler (c) a pencil and tape (d) a magnet
32. 32.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
33. 33.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a stopwatch (d) yeast
35. 35.True or false: a mirror is needed for the pendulum. (a) False (b) True
36. 36.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
37. 37.⚖️ 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
38. 38.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
39. 39.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a small nut or washer (d) a glass bottle
40. 40.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) slower (d) stopped

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