Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 483 · 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.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) quicker (d) slower
2. 2.🧺 Which of these is needed for the pendulum? (a) yeast (b) a battery cell (c) a pencil and tape (d) a magnet
3. 3.🧺 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 stopwatch
4. 4.🔮 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
5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a stopwatch (c) a ruler (d) a string
6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
7. 7.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a phone (c) a sundial (d) a grandfather clock
8. 8.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
9. 9.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) it is wet (d) the bob could hit you
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
11. 11.🧺 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 pencil and tape (d) a string
12. 12.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a balloon (c) yeast (d) a string
13. 13.⚖️ 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 measure it (c) we keep it the same
14. 14.🔮 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
15. 15.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
16. 16.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
17. 17.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
18. 18.⚖️ 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) True (b) False
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is what we measure. (a) True (b) False
20. 20.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
21. 21.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
22. 22.⚖️ 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 weight of the bob (c) the string length
23. 23.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a small nut or washer (c) a heavy brick (d) a sharp tool
24. 24.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
25. 25.⚖️ 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
26. 26.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
27. 27.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
28. 28.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 22 seconds?
29. 29.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the weight of the bob (b) the string length (c) time for 10 swings (d) the same hook
30. 30.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
31. 31.True or false: a string is needed for the pendulum. (a) False (b) True
32. 32.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
33. 33.⚖️ 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
34. 34.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) turmeric powder (c) a heavy nut or washer (d) a mirror
35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a pencil and tape (d) turmeric powder
36. 36.🕰️ A pendulum makes 10 swings in 20 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: the string length is the one thing we change. (a) False (b) True
38. 38.⚖️ 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
39. 39.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
40. 40.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 12 seconds?

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