Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 683 · 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? What do we do with “the same hook”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.⚖️ 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 same hook
3. 3.True or false: a battery cell is needed for the pendulum. (a) True (b) False
4. 4.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) stopped (c) heavier (d) quicker
5. 5.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a sharp tool (c) a heavy brick (d) a glass bottle
6. 6.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we keep it the same (b) we change it (c) we measure it
8. 8.True or false: yeast is not needed for the pendulum. (a) False (b) True
9. 9.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
10. 10.⚖️ 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 keep it the same (c) we measure it
11. 11.🧺 Which of these is needed for the pendulum? (a) yeast (b) a stopwatch (c) a mirror (d) a battery cell
12. 12.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
13. 13.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a heavy nut or washer (c) turmeric powder (d) a ruler
14. 14.🕰️ A pendulum makes 20 swings in 60 seconds. How many seconds does one swing take?
15. 15.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a shorter string (c) a longer string (d) a heavier bob
16. 16.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is the one thing we change? (a) the weight of the bob (b) how far we pull it back (c) the string length (d) time for 10 swings
17. 17.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 8 seconds?
18. 18.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) False (b) True
19. 19.🛟 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
20. 20.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a mirror (c) a pencil and tape (d) a magnet
21. 21.⚖️ 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
22. 22.🔮 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
23. 23.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a heavy nut or washer (c) a ruler (d) a stopwatch
24. 24.True or false: a string is not needed for the pendulum. (a) True (b) False
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) yeast (c) a string (d) a ruler
26. 26.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
27. 27.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a balloon (b) a stopwatch (c) a string (d) a pencil and tape
28. 28.⚖️ 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
29. 29.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
30. 30.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) the wind (c) gravity (d) magnetism
31. 31.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a battery cell (c) a magnet (d) a ruler
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) turmeric powder (c) a stopwatch (d) a string
33. 33.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 21 seconds?
34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) the weight of the bob
35. 35.⚖️ 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 keep it the same (b) we measure it (c) we change it
36. 36.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
37. 37.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
38. 38.⚖️ 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
39. 39.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
40. 40.⚖️ 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

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