Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 983 · 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 ruler for the pendulum? (a) needed (b) not needed
2. 2.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
3. 3.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) how far we pull it back (b) the string length (c) time for 10 swings (d) the weight of the bob
4. 4.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
5. 5.True or false: a pencil and tape is not needed for the pendulum. (a) False (b) True
6. 6.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a magnet (c) a mirror (d) a pencil and tape
7. 7.⚖️ 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) False (b) True
8. 8.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
9. 9.⚖️ 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
10. 10.⚖️ 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) False (b) True
11. 11.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a longer string (d) a shorter string
12. 12.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it becomes 4 times (c) it doubles (d) it halves
13. 13.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) the bob could hit you (d) it is hot
14. 14.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a glass bottle (d) a small nut or washer
15. 15.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
16. 16.⚖️ 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) time for 10 swings (c) the weight of the bob (d) the same hook
17. 17.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a magnet (d) a stopwatch
18. 18.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
19. 19.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 16 seconds?
20. 20.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a ruler (c) a balloon (d) a pencil and tape
21. 21.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) slower (d) stopped
22. 22.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) a mirror (d) a string
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.⚖️ 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
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) yeast (d) a string
26. 26.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) it cannot swing (d) much slower
27. 27.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) yeast (c) a balloon (d) turmeric powder
28. 28.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
29. 29.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
30. 30.🧺 Which of these is needed for the pendulum? (a) yeast (b) a mirror (c) a stopwatch (d) a magnet
31. 31.⚖️ 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 keep it the same (c) we measure it
32. 32.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) a stopwatch (d) turmeric powder
33. 33.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) the wind (d) gravity
34. 34.⚖️ 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) False (b) True
35. 35.🕰️ 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
36. 36.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
37. 37.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) a heavy nut or washer (d) a string
39. 39.True or false: a balloon is not needed for the pendulum. (a) False (b) True
40. 40.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?

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