Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 959 · 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: a balloon 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 string (b) a mirror (c) a pencil and tape (d) a stopwatch
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we measure it (c) we change it
4. 4.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) it is magnetic (d) the bob could hit you
5. 5.⚖️ 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) the weight of the bob (c) how far we pull it back (d) the same hook
6. 6.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a shorter string (c) a longer string (d) a heavier bob
7. 7.⚖️ 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
8. 8.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the same hook (c) how far we pull it back (d) time for 10 swings
9. 9.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a magnet (c) a heavy nut or washer (d) a pencil and tape
10. 10.⚖️ 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
11. 11.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 15 seconds?
12. 12.True or false: a mirror is not needed for the pendulum. (a) False (b) True
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) a stopwatch (d) a mirror
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) a pencil and tape (d) turmeric powder
16. 16.🧺 Which of these is not needed for the pendulum? (a) a balloon (b) a string (c) a ruler (d) a stopwatch
17. 17.⚖️ 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 change it (b) we keep it the same (c) we measure it
18. 18.⚖️ 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
19. 19.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
20. 20.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 8 seconds?
21. 21.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) about the same (c) much slower (d) much faster
22. 22.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it doubles (c) it becomes 4 times (d) it stays the same
23. 23.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more fun (c) one swing is too slow (d) it is more accurate
24. 24.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
25. 25.⚖️ 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
26. 26.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
27. 27.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
28. 28.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a string (c) a battery cell (d) turmeric powder
29. 29.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 38 seconds?
30. 30.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
31. 31.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) yeast (d) a ruler
32. 32.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a small nut or washer (c) a heavy brick (d) a glass bottle
33. 33.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 21 seconds?
34. 34.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
35. 35.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
36. 36.True or false: a ruler is needed for the pendulum. (a) True (b) False
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a pencil and tape (d) a magnet
38. 38.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
39. 39.🕰️ A pendulum makes 5 swings in 5 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 18 seconds?

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