Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 754 · 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.⚖️ 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) the weight of the bob (c) the string length (d) how far we pull it back
2. 2.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
3. 3.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) a string (d) yeast
4. 4.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) stopped (c) quicker (d) heavier
5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a ruler (c) a pencil and tape (d) a stopwatch
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a magnet (c) a string (d) a heavy nut or washer
7. 7.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a ruler (c) turmeric powder (d) a heavy nut or washer
8. 8.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
9. 9.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a digital watch (c) a sundial (d) a phone
10. 10.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) magnetism (c) gravity (d) the string
11. 11.⚖️ 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
12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a pencil and tape (c) a mirror (d) a ruler
13. 13.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?
14. 14.True or false: a string is not needed for the pendulum. (a) False (b) True
15. 15.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
16. 16.🕰️ Does a heavier bob change the swing time? (a) it stops swinging (b) no, hardly at all (c) yes, much faster (d) yes, much slower
17. 17.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) a heavy nut or washer (d) a balloon
18. 18.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
19. 19.⚖️ 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
20. 20.⚖️ 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 change it (c) we measure it
21. 21.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is kept the same. (a) False (b) True
23. 23.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) the bob could hit you (d) it is wet
24. 24.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
25. 25.True or false: a string is needed for the pendulum. (a) True (b) False
26. 26.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) a balloon (d) a pencil and tape
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) True (b) False
28. 28.True or false: a stopwatch is not needed for the pendulum. (a) False (b) True
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a stopwatch (c) a string (d) a heavy nut or washer
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 same hook
31. 31.True or false: a battery cell is needed for the pendulum. (a) False (b) True
32. 32.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a ruler (d) yeast
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) time for 10 swings (b) the weight of the bob (c) how far we pull it back (d) the string length
34. 34.🧺 Do we need a battery cell for the pendulum? (a) needed (b) not needed
35. 35.⚖️ 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
36. 36.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 12 seconds?
37. 37.⚖️ 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 measure it (c) we keep it the same
38. 38.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False
39. 39.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a sharp tool (d) a glass bottle
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False

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