Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 763 · 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 the one thing we change? (a) how far we pull it back (b) the weight of the bob (c) the string length (d) time for 10 swings
2. 2.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
3. 3.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a lighter bob (c) a longer string (d) a heavier bob
4. 4.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) magnetism (c) the string (d) the wind
5. 5.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) it cannot swing (c) about the same (d) much faster
6. 6.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
7. 7.True or false: a heavy nut or washer is not needed for the pendulum. (a) True (b) False
8. 8.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is wet (c) the bob could hit you (d) it is magnetic
9. 9.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a magnet (d) a pencil and tape
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) False (b) True
11. 11.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it stays the same (b) it halves (c) it becomes 4 times (d) it doubles
12. 12.🕰️ Does a heavier bob change the swing time? (a) no, hardly at all (b) yes, much faster (c) it stops swinging (d) yes, much slower
13. 13.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
14. 14.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
15. 15.🕰️ 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) one swing is too slow (d) it is more fun
16. 16.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a magnet (d) a pencil and tape
17. 17.⚖️ 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) time for 10 swings (c) the string length (d) the same hook
18. 18.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
19. 19.🧺 Which of these is needed for the pendulum? (a) yeast (b) a stopwatch (c) turmeric powder (d) a mirror
20. 20.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a sharp tool (c) a small nut or washer (d) a glass bottle
21. 21.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
22. 22.⚖️ 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
23. 23.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a string (c) a ruler (d) a pencil and tape
24. 24.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a mirror (c) a string (d) a pencil and tape
25. 25.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) a magnet (c) a balloon (d) a ruler
26. 26.⚖️ 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 measure it (b) we keep it the same (c) we change it
27. 27.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) slower (d) stopped
28. 28.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a heavy nut or washer (c) a balloon (d) a mirror
29. 29.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) turmeric powder (c) a string (d) a heavy nut or washer
30. 30.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is the one thing we change. (a) True (b) False
31. 31.⚖️ 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
32. 32.⚖️ 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
33. 33.True or false: a pencil and tape is needed for the pendulum. (a) False (b) True
34. 34.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
35. 35.⚖️ 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
36. 36.🧺 Which of these is not needed for the pendulum? (a) a mirror (b) a string (c) a pencil and tape (d) a stopwatch
37. 37.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a ruler (d) turmeric powder
39. 39.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
40. 40.🕰️ Which old clock uses a pendulum to keep time? (a) a phone (b) a digital watch (c) a sundial (d) a grandfather clock

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