Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 957 · 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 not needed for the pendulum. (a) False (b) True
2. 2.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings
3. 3.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
4. 4.⚖️ 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
5. 5.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) yeast (c) a stopwatch (d) a magnet
6. 6.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a heavier bob (c) a lighter bob (d) a longer string
7. 7.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is magnetic (c) the bob could hit you (d) it is hot
8. 8.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) it stops swinging (c) yes, much faster (d) no, hardly at all
9. 9.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
10. 10.⚖️ 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 change it (c) we measure it
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) turmeric powder (d) a heavy nut or washer
12. 12.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) much faster (c) much slower (d) about the same
13. 13.🧺 Which of these is needed for the pendulum? (a) a magnet (b) turmeric powder (c) a heavy nut or washer (d) a mirror
14. 14.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a heavy nut or washer (c) a string (d) a stopwatch
15. 15.⚖️ 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
16. 16.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 30 seconds?
17. 17.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) gravity (c) magnetism (d) the wind
18. 18.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it doubles (b) it becomes 4 times (c) it stays the same (d) it halves
19. 19.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
20. 20.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 14 seconds?
21. 21.True or false: a magnet is needed for the pendulum. (a) False (b) True
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
23. 23.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the same hook (b) how far we pull it back (c) time for 10 swings (d) the weight of the bob
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.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 18 seconds?
27. 27.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
28. 28.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
29. 29.🧺 Which of these is needed for the pendulum? (a) yeast (b) turmeric powder (c) a pencil and tape (d) a magnet
30. 30.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
31. 31.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
32. 32.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is the one thing we change. (a) True (b) False
34. 34.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a heavy nut or washer (c) a ruler (d) yeast
35. 35.True or false: a string is not needed for the pendulum. (a) True (b) False
36. 36.⚖️ 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
37. 37.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a string (d) a mirror
38. 38.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a heavy nut or washer (c) a ruler (d) a pencil and tape
39. 39.🛟 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
40. 40.⚖️ 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) True (b) False

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