Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 799 · 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.True or false: a mirror is not needed for the pendulum. (a) False (b) True
2. 2.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) slower (c) stopped (d) heavier
3. 3.🧺 Which of these is needed for the pendulum? (a) a stopwatch (b) a mirror (c) a magnet (d) a balloon
4. 4.🛟 Why should you stand back from a swinging pendulum? (a) it is wet (b) it is hot (c) the bob could hit you (d) it is magnetic
5. 5.⚖️ 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
6. 6.🕰️ A pendulum makes 15 swings in 45 seconds. How many seconds does one swing take?
7. 7.🧺 Do we need a string for the pendulum? (a) needed (b) not needed
8. 8.📘 What pulls the pendulum bob back down after each swing? (a) the wind (b) the string (c) magnetism (d) gravity
9. 9.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
10. 10.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a pencil and tape (c) a stopwatch (d) a magnet
12. 12.🧺 Which of these is not needed for the pendulum? (a) a string (b) a battery cell (c) a ruler (d) a stopwatch
13. 13.⚖️ 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
14. 14.⚖️ 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) how far we pull it back (c) the string length
15. 15.🧺 Which of these is not needed for the pendulum? (a) yeast (b) a string (c) a pencil and tape (d) a stopwatch
16. 16.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
17. 17.🕰️ A pendulum makes 5 swings in 5 seconds. How many seconds does one swing take?
18. 18.True or false: a string is needed for the pendulum. (a) True (b) False
19. 19.⚖️ 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) True (b) False
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
22. 22.⚖️ 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) the same hook (c) the weight of the bob (d) time for 10 swings
23. 23.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a heavy brick (d) a small nut or washer
24. 24.True or false: a magnet is not needed for the pendulum. (a) True (b) False
25. 25.🧺 Which of these is needed for the pendulum? (a) turmeric powder (b) yeast (c) a battery cell (d) a heavy nut or washer
26. 26.True or false: a balloon 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.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a ruler (c) a pencil and tape (d) a heavy nut or washer
29. 29.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
30. 30.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it stays the same (c) it becomes 4 times (d) it doubles
31. 31.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a magnet (c) a battery cell (d) a string
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) turmeric powder (d) a ruler
33. 33.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) True (b) False
35. 35.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) it cannot swing (d) about the same
36. 36.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) a heavy nut or washer (d) a mirror
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a ruler (c) a heavy nut or washer (d) a stopwatch
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a balloon (d) a heavy nut or washer
39. 39.True or false: a balloon is needed for the pendulum. (a) False (b) True
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the same hook (b) time for 10 swings (c) the string length

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