Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 407 · 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.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
2. 2.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) about the same (d) it cannot swing
3. 3.🧺 Which of these is needed for the pendulum? (a) a ruler (b) turmeric powder (c) a battery cell (d) yeast
4. 4.True or false: a magnet is needed for the pendulum. (a) True (b) False
5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a heavy nut or washer (d) yeast
6. 6.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) the bob could hit you (c) it is wet (d) it is hot
7. 7.⚖️ 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
8. 8.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a mirror (c) a ruler (d) a pencil and tape
9. 9.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a glass bottle (d) a sharp tool
10. 10.🧺 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) turmeric powder
11. 11.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
12. 12.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a string (c) a ruler (d) a magnet
13. 13.🕰️ 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
14. 14.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
15. 15.⚖️ 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 measure it (c) we change it
16. 16.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it doubles (c) it halves (d) it becomes 4 times
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a mirror (d) a stopwatch
18. 18.⚖️ 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
19. 19.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 12 seconds?
20. 20.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
21. 21.True or false: a string is needed for the pendulum. (a) True (b) False
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a battery cell (c) a ruler (d) a stopwatch
24. 24.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a mirror (c) turmeric powder (d) a balloon
25. 25.⚖️ 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
26. 26.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) turmeric powder (c) a heavy nut or washer (d) a pencil and tape
27. 27.True or false: a balloon is needed for the pendulum. (a) True (b) False
28. 28.True or false: a string is not needed for the pendulum. (a) True (b) False
29. 29.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a longer string (c) a heavier bob (d) a shorter string
30. 30.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
31. 31.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
32. 32.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) time for 10 swings (c) the same hook (d) how far we pull it back
33. 33.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a magnet (d) a pencil and tape
34. 34.⚖️ 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
35. 35.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
36. 36.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
37. 37.⚖️ 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
38. 38.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a digital watch (c) a grandfather clock (d) a sundial
39. 39.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) False (b) True
40. 40.True or false: turmeric powder is needed for the pendulum. (a) True (b) False

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