Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 534 · 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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a stopwatch (c) a ruler (d) a heavy nut or washer
2. 2.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) turmeric powder (d) a pencil and tape
3. 3.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
4. 4.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a grandfather clock (c) a phone (d) a digital watch
5. 5.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings
6. 6.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it halves (c) it doubles (d) it becomes 4 times
7. 7.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
8. 8.🧺 Which of these is needed for the pendulum? (a) a ruler (b) a balloon (c) a mirror (d) a battery cell
9. 9.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
10. 10.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a stopwatch (c) a ruler (d) a string
11. 11.⚖️ 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) how far we pull it back (c) the same hook (d) the string length
12. 12.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) time for 10 swings (b) the string length (c) the same hook (d) how far we pull it back
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
15. 15.⚖️ 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 measure it (c) we keep it the same
16. 16.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) stopped (c) heavier (d) slower
17. 17.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is magnetic (d) it is hot
18. 18.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 9 seconds?
19. 19.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
20. 20.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
21. 21.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 30 seconds?
22. 22.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
23. 23.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a magnet (c) a pencil and tape (d) a battery cell
24. 24.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) about the same (d) it cannot swing
25. 25.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
26. 26.True or false: a ruler is not needed for the pendulum. (a) True (b) False
27. 27.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
28. 28.⚖️ 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) False (b) True
29. 29.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a sharp tool (c) a heavy brick (d) a glass bottle
30. 30.True or false: yeast is needed for the pendulum. (a) False (b) True
31. 31.⚖️ 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) False (b) True
32. 32.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
33. 33.⚖️ 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
34. 34.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
35. 35.🧺 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 battery cell
36. 36.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) it is more fun (c) 10 is a lucky number (d) it is more accurate
37. 37.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
38. 38.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.⚖️ 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
40. 40.⚖️ 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

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