Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 842 · 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.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a battery cell (c) turmeric powder (d) a pencil and tape
2. 2.True or false: a magnet is not needed for the pendulum. (a) False (b) True
3. 3.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
4. 4.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed
5. 5.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) 10 is a lucky number (b) it is more fun (c) it is more accurate (d) one swing is too slow
6. 6.True or false: a heavy nut or washer is needed for the pendulum. (a) True (b) False
7. 7.🧺 Which of these is needed for the pendulum? (a) yeast (b) a heavy nut or washer (c) a magnet (d) a balloon
8. 8.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 33 seconds?
9. 9.🛟 What is a safe bob for a home pendulum? (a) a small nut or washer (b) a heavy brick (c) a glass bottle (d) a sharp tool
10. 10.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a heavy nut or washer (d) a magnet
12. 12.🧺 Do we need a mirror for the pendulum? (a) needed (b) not needed
13. 13.⚖️ 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 keep it the same (c) we change it
14. 14.True or false: a ruler is not needed for the pendulum. (a) True (b) False
15. 15.⚖️ 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
16. 16.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it doubles (c) it becomes 4 times (d) it stays the same
17. 17.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a string (c) turmeric powder (d) a ruler
18. 18.⚖️ 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) how far we pull it back (c) time for 10 swings (d) the string length
19. 19.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
20. 20.⚖️ 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
21. 21.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a longer string (c) a shorter string (d) a heavier bob
22. 22.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a sundial (c) a phone (d) a digital watch
23. 23.⚖️ 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
24. 24.⚖️ 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
25. 25.True or false: a string is not needed for the pendulum. (a) False (b) True
26. 26.⚖️ 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
27. 27.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
28. 28.⚖️ 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
29. 29.⚖️ 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
30. 30.⚖️ 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
31. 31.⚖️ 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
32. 32.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a battery cell (c) a string (d) a ruler
33. 33.🔮 Predict: you make the string shorter. The swings get ___. (a) heavier (b) stopped (c) slower (d) quicker
34. 34.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
35. 35.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) a string (c) a mirror (d) a heavy nut or washer
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is the one thing we change. (a) False (b) True
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a stopwatch (b) yeast (c) a string (d) a pencil and tape
38. 38.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a ruler (c) a battery cell (d) a string
39. 39.🛟 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
40. 40.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?

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