Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 31 · 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.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
2. 2.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a shorter string (c) a longer string (d) a lighter bob
3. 3.⚖️ 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) False (b) True
4. 4.⚖️ 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
5. 5.⚖️ 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) how far we pull it back (c) the string length (d) the same hook
6. 6.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much slower (b) much faster (c) about the same (d) it cannot swing
7. 7.⚖️ 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
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a magnet (c) a ruler (d) a heavy nut or washer
9. 9.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 8 seconds?
10. 10.🕰️ A pendulum makes 20 swings in 40 seconds. How many seconds does one swing take?
11. 11.⚖️ 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 same hook
12. 12.⚖️ 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
13. 13.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is magnetic (c) the bob could hit you (d) it is hot
14. 14.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
15. 15.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
16. 16.⚖️ 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
17. 17.⚖️ 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
18. 18.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
19. 19.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a heavy brick (c) a glass bottle (d) a small nut or washer
20. 20.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) yeast (c) a ruler (d) a heavy nut or washer
22. 22.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) turmeric powder (c) a string (d) a ruler
23. 23.⚖️ 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
24. 24.True or false: a balloon is needed for the pendulum. (a) True (b) False
25. 25.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
26. 26.True or false: a string is not needed for the pendulum. (a) True (b) False
27. 27.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
28. 28.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 54 seconds?
29. 29.⚖️ 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 keep it the same (c) we change it
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.True or false: a magnet is not needed for the pendulum. (a) False (b) True
32. 32.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
33. 33.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a stopwatch (c) a pencil and tape (d) a ruler
34. 34.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
35. 35.True or false: a ruler is not needed for the pendulum. (a) True (b) False
36. 36.True or false: a magnet is needed for the pendulum. (a) False (b) True
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a ruler (b) a stopwatch (c) a mirror (d) a pencil and tape
38. 38.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) quicker (c) stopped (d) slower
39. 39.True or false: a battery cell is not needed for the pendulum. (a) False (b) True
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the weight of the bob is what we measure. (a) True (b) False

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