Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 482 · 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.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) slower (c) stopped (d) quicker
2. 2.⚖️ 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
3. 3.⚖️ 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) False (b) True
4. 4.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a glass bottle (c) a small nut or washer (d) a sharp tool
5. 5.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a balloon (c) a stopwatch (d) a pencil and tape
6. 6.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
7. 7.True or false: a ruler is needed for the pendulum. (a) False (b) True
8. 8.⚖️ 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
9. 9.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
10. 10.True or false: a mirror is needed for the pendulum. (a) True (b) False
11. 11.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
12. 12.⚖️ 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
13. 13.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a phone (c) a grandfather clock (d) a sundial
14. 14.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 5 seconds?
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) the string length (c) time for 10 swings
16. 16.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 24 seconds?
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) False (b) True
18. 18.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
19. 19.⚖️ 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) the string length (c) the weight of the bob (d) how far we pull it back
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) time for 10 swings (c) the string length
21. 21.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a battery cell (c) a mirror (d) a pencil and tape
22. 22.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 45 seconds?
23. 23.🕰️ Which change makes a pendulum swing more slowly? (a) a longer string (b) a lighter bob (c) a heavier bob (d) a shorter string
24. 24.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
25. 25.🔮 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
26. 26.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
27. 27.🧺 Do we need yeast for the pendulum? (a) not needed (b) needed
28. 28.True or false: a magnet is not needed for the pendulum. (a) True (b) False
29. 29.⚖️ 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 weight of the bob (d) the string length
30. 30.True or false: turmeric powder is needed for the pendulum. (a) False (b) True
31. 31.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a ruler (c) a string (d) a heavy nut or washer
32. 32.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
33. 33.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) the bob could hit you (c) it is hot (d) it is magnetic
34. 34.True or false: a balloon is 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 not needed for the pendulum. (a) True (b) False
37. 37.⚖️ 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
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a heavy nut or washer (c) a string (d) turmeric powder
39. 39.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a pencil and tape (c) a string (d) a ruler
40. 40.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?

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