Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 191 · 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: turmeric powder is needed for the pendulum. (a) False (b) True
2. 2.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) the bob could hit you (d) it is wet
3. 3.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) stopped (d) heavier
4. 4.⚖️ 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
5. 5.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) it cannot swing (d) much faster
6. 6.🕰️ Does a heavier bob change the swing time? (a) yes, much faster (b) no, hardly at all (c) it stops swinging (d) yes, much slower
7. 7.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a string (c) a heavy nut or washer (d) a pencil and tape
8. 8.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
9. 9.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 19 seconds?
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) True (b) False
11. 11.⚖️ 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) True (b) False
12. 12.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
13. 13.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
14. 14.⚖️ 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 measure it (c) we keep it the same
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) yeast (c) a pencil and tape (d) a stopwatch
16. 16.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a phone (c) a sundial (d) a grandfather clock
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the same hook (b) how far we pull it back (c) the weight of the bob (d) the string length
18. 18.⚖️ 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
19. 19.⚖️ 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
20. 20.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) the wind (c) magnetism (d) gravity
21. 21.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
24. 24.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more fun (b) 10 is a lucky number (c) one swing is too slow (d) it is more accurate
25. 25.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
26. 26.True or false: a balloon is needed for the pendulum. (a) True (b) False
27. 27.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a magnet (c) a heavy nut or washer (d) a balloon
28. 28.🧺 Do we need a magnet for the pendulum? (a) needed (b) not needed
29. 29.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it stays the same (c) it doubles (d) it halves
30. 30.⚖️ 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
31. 31.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the string length”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) turmeric powder (c) a string (d) yeast
33. 33.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a small nut or washer (c) a glass bottle (d) a heavy brick
34. 34.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
35. 35.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 60 seconds?
36. 36.True or false: a heavy nut or washer is needed for the pendulum. (a) False (b) True
37. 37.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) a battery cell (d) a string
38. 38.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a heavy nut or washer (d) a magnet
39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a pencil and tape (c) a heavy nut or washer (d) a balloon
40. 40.⚖️ 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

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