Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 785 · 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.True or false: yeast is needed for the pendulum. (a) True (b) False
2. 2.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a mirror (d) a string
3. 3.⚖️ 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
4. 4.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
5. 5.⚖️ 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 string length (d) the weight of the bob
6. 6.🛟 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
7. 7.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
8. 8.⚖️ 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 change it (c) we keep it the same
9. 9.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) much slower (d) it cannot swing
10. 10.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a grandfather clock (c) a sundial (d) a phone
11. 11.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
12. 12.⚖️ 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
13. 13.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a ruler (c) a string (d) a stopwatch
14. 14.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) 10 is a lucky number (c) one swing is too slow (d) it is more accurate
15. 15.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a balloon (d) a string
17. 17.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a glass bottle (d) a sharp tool
18. 18.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
19. 19.True or false: a ruler is needed for the pendulum. (a) True (b) False
20. 20.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
21. 21.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) a ruler (d) a magnet
22. 22.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
23. 23.⚖️ 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
24. 24.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a heavy nut or washer (d) turmeric powder
25. 25.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
26. 26.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 38 seconds?
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) True (b) False
28. 28.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
29. 29.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a string (d) a magnet
30. 30.⚖️ 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 string length (c) the weight of the bob
31. 31.🧺 Do we need a string for the pendulum? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a magnet (c) a ruler (d) a heavy nut or washer
33. 33.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
34. 34.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a balloon (d) a pencil and tape
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 stopwatch (d) turmeric powder
36. 36.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) stopped (d) heavier
37. 37.True or false: a mirror is needed for the pendulum. (a) True (b) False
38. 38.True or false: a string is needed for the pendulum. (a) False (b) True
39. 39.True or false: a magnet is needed for the pendulum. (a) False (b) True
40. 40.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 19 seconds?

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