Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 298 · 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 pencil and tape for the pendulum? (a) needed (b) not needed
2. 2.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) no, hardly at all (c) it stops swinging (d) yes, much faster
3. 3.⚖️ 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) how far we pull it back (d) the string length
4. 4.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
5. 5.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it doubles (c) it becomes 4 times (d) it halves
6. 6.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a string (c) a battery cell (d) a stopwatch
7. 7.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
8. 8.🧺 Which of these is needed for the pendulum? (a) a string (b) a balloon (c) yeast (d) a magnet
9. 9.🧺 Which of these is not needed for the pendulum? (a) a string (b) a stopwatch (c) a magnet (d) a pencil and tape
10. 10.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a heavy brick (c) a small nut or washer (d) a sharp tool
11. 11.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a shorter string (c) a lighter bob (d) a heavier bob
12. 12.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) much faster (d) it cannot swing
13. 13.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a mirror (c) turmeric powder (d) a battery cell
14. 14.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
15. 15.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 15 seconds?
16. 16.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is wet (c) it is hot (d) the bob could hit you
17. 17.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
18. 18.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a balloon (d) a heavy nut or washer
19. 19.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.True or false: a mirror is not needed for the pendulum. (a) True (b) False
21. 21.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
22. 22.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 21 seconds?
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 accurate (c) it is more fun (d) one swing is too slow
24. 24.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) turmeric powder (c) a ruler (d) a heavy nut or washer
26. 26.⚖️ 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 same hook (c) the string length (d) the weight of the bob
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a ruler (c) a stopwatch (d) a string
29. 29.⚖️ 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 change it (c) we keep it the same
30. 30.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) slower (c) heavier (d) quicker
31. 31.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
32. 32.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a digital watch (c) a grandfather clock (d) a phone
33. 33.🧺 Which of these is needed for the pendulum? (a) yeast (b) a magnet (c) a mirror (d) a pencil and tape
34. 34.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a heavy nut or washer (c) a string (d) a pencil and tape
35. 35.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 16 seconds?
36. 36.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 10 seconds?
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a stopwatch (c) a pencil and tape (d) a heavy nut or washer
38. 38.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
39. 39.True or false: a magnet is not needed for the pendulum. (a) True (b) False
40. 40.True or false: turmeric powder is not needed for the pendulum. (a) True (b) False

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