Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 513 · 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 pencil and tape for the pendulum? (a) not needed (b) needed
2. 2.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a mirror (c) a heavy nut or washer (d) a magnet
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a balloon (c) a stopwatch (d) a heavy nut or washer
5. 5.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
6. 6.🧺 Which of these is needed for the pendulum? (a) a string (b) a magnet (c) a battery cell (d) a mirror
7. 7.🔮 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
8. 8.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a phone (c) a grandfather clock (d) a sundial
9. 9.⚖️ 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) how far we pull it back (c) time for 10 swings (d) the same hook
10. 10.⚖️ 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
11. 11.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 28 seconds?
12. 12.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a sharp tool (d) a glass bottle
13. 13.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a heavy nut or washer (c) a stopwatch (d) a mirror
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a stopwatch (d) yeast
15. 15.True or false: a mirror is needed for the pendulum. (a) True (b) False
16. 16.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
17. 17.🧺 Which of these is needed for the pendulum? (a) a pencil and tape (b) a balloon (c) a mirror (d) yeast
18. 18.True or false: a string is needed for the pendulum. (a) True (b) False
19. 19.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
20. 20.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
21. 21.⚖️ 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
22. 22.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
23. 23.⚖️ 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) the same hook
24. 24.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a pencil and tape (c) a magnet (d) a heavy nut or washer
25. 25.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) it cannot swing (d) much faster
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) turmeric powder (d) a string
27. 27.⚖️ 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
28. 28.⚖️ 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) True (b) False
29. 29.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 16 seconds?
30. 30.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) slower (d) stopped
31. 31.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is hot (d) it is magnetic
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 “the same hook”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
35. 35.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) gravity (c) the string (d) the wind
36. 36.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
37. 37.⚖️ 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) True (b) False
38. 38.⚖️ 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 change it (c) we keep it the same
39. 39.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
40. 40.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?

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