Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 844 · 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.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) about the same (d) it cannot swing
2. 2.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
3. 3.🛟 Why should you stand back from a swinging pendulum? (a) the bob could hit you (b) it is wet (c) it is magnetic (d) it is hot
4. 4.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a string (c) a magnet (d) a pencil and tape
5. 5.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a sharp tool (d) a small nut or washer
6. 6.⚖️ 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) the same hook (d) time for 10 swings
7. 7.⚖️ 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
8. 8.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
9. 9.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
10. 10.True or false: a mirror is needed for the pendulum. (a) True (b) False
11. 11.🔮 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 halves (d) it doubles
12. 12.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) how far we pull it back (b) the weight of the bob (c) the same hook (d) the string length
13. 13.⚖️ 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) False (b) True
14. 14.True or false: a magnet is needed for the pendulum. (a) True (b) False
15. 15.⚖️ 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
16. 16.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
17. 17.True or false: a pencil and tape is needed for the pendulum. (a) True (b) False
18. 18.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a pencil and tape (c) yeast (d) a heavy nut or washer
19. 19.⚖️ 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
20. 20.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a balloon (c) yeast (d) a heavy nut or washer
21. 21.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a pencil and tape (c) a battery cell (d) a string
23. 23.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a balloon (c) a pencil and tape (d) a battery cell
24. 24.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
25. 25.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 10 seconds?
26. 26.⚖️ 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 same hook (c) the string length
27. 27.⚖️ 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
28. 28.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) turmeric powder (c) a pencil and tape (d) a stopwatch
29. 29.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) quicker (d) slower
30. 30.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a sundial (c) a phone (d) a digital watch
31. 31.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
32. 32.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
33. 33.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 12 seconds?
34. 34.⚖️ 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
35. 35.True or false: a battery cell is needed for the pendulum. (a) False (b) True
36. 36.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) yes, much faster (c) it stops swinging (d) no, hardly at all
37. 37.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
38. 38.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a stopwatch (c) a ruler (d) a heavy nut or washer
40. 40.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) a string (d) a mirror

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