Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 77 · 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.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) turmeric powder (c) a string (d) a ruler
2. 2.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a magnet (c) a ruler (d) a heavy nut or washer
3. 3.⚖️ 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) False (b) True
4. 4.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the string (c) the wind (d) magnetism
5. 5.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it halves (c) it doubles (d) it stays the same
6. 6.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
7. 7.⚖️ 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) time for 10 swings (c) the same hook (d) the weight of the bob
8. 8.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a sharp tool (d) a small nut or washer
9. 9.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
10. 10.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 10 seconds?
11. 11.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) yes, much faster (c) it stops swinging (d) no, hardly at all
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) how far we pull it back
13. 13.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
14. 14.⚖️ 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 keep it the same (c) we measure it
15. 15.True or false: a balloon is not needed for the pendulum. (a) True (b) False
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a battery cell (c) a ruler (d) a string
17. 17.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
18. 18.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) slower (d) heavier
19. 19.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a mirror (c) a balloon (d) a battery cell
20. 20.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a pencil and tape (d) a mirror
22. 22.🧺 Which of these is needed for the pendulum? (a) yeast (b) a mirror (c) a magnet (d) a ruler
23. 23.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
24. 24.⚖️ 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) False (b) True
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 keep it the same (c) we change it
26. 26.⚖️ 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
27. 27.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 11 seconds?
28. 28.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) yeast (d) a stopwatch
30. 30.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
31. 31.True or false: a mirror is needed for the pendulum. (a) False (b) True
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a balloon (d) a ruler
33. 33.⚖️ 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
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a stopwatch (d) turmeric powder
35. 35.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
36. 36.True or false: a ruler is not needed for the pendulum. (a) True (b) False
37. 37.🧺 Which of these is not needed for the pendulum? (a) a string (b) a mirror (c) a stopwatch (d) a heavy nut or washer
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the string length (b) the weight of the bob (c) the same hook (d) time for 10 swings
39. 39.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
40. 40.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False

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