Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 973 · 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.🛟 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
2. 2.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) stopped (d) slower
3. 3.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a balloon (c) a string (d) a ruler
4. 4.🧺 Which of these is needed for the pendulum? (a) yeast (b) a battery cell (c) a magnet (d) a pencil and tape
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.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
7. 7.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
8. 8.🕰️ 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
9. 9.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
10. 10.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
11. 11.⚖️ 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 weight of the bob (c) how far we pull it back (d) the string length
12. 12.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is kept the same. (a) True (b) False
14. 14.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is kept the same. (a) True (b) False
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the weight of the bob (b) the string length (c) the same hook (d) time for 10 swings
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a stopwatch (c) a string (d) a magnet
17. 17.True or false: a balloon is needed for the pendulum. (a) True (b) False
18. 18.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
19. 19.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a balloon (c) yeast (d) a mirror
20. 20.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the string (c) the wind (d) magnetism
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) yeast (c) a stopwatch (d) a ruler
22. 22.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
23. 23.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) how far we pull it back (c) time for 10 swings
24. 24.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it halves (c) it doubles (d) it stays the same
25. 25.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
26. 26.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 19 seconds?
27. 27.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a balloon (c) a heavy nut or washer (d) a stopwatch
28. 28.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a mirror (d) a ruler
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a ruler (c) a string (d) a heavy nut or washer
30. 30.⚖️ 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 change it (c) we measure it
31. 31.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a string (c) turmeric powder (d) yeast
32. 32.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
33. 33.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 34 seconds?
34. 34.⚖️ 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 change it (b) we measure it (c) we keep it the same
35. 35.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we keep it the same (b) we measure it (c) we change it
36. 36.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) it is wet (d) the bob could hit you
37. 37.⚖️ 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
38. 38.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 36 seconds?
39. 39.True or false: a battery cell is not needed for the pendulum. (a) True (b) False
40. 40.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed

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