Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 556 · 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 heavy nut or washer is needed for the pendulum. (a) True (b) False
2. 2.🧺 Which of these is needed for the pendulum? (a) a heavy nut or washer (b) a magnet (c) a mirror (d) turmeric powder
3. 3.🔮 Predict: you make the string shorter. The swings get ___. (a) quicker (b) heavier (c) slower (d) stopped
4. 4.🧺 Which of these is not needed for the pendulum? (a) a battery cell (b) a pencil and tape (c) a stopwatch (d) a heavy nut or washer
5. 5.🕰️ Which change makes a pendulum swing more slowly? (a) a lighter bob (b) a heavier bob (c) a shorter string (d) a longer string
6. 6.True or false: a balloon is not needed for the pendulum. (a) False (b) True
7. 7.True or false: a string is needed for the pendulum. (a) False (b) True
8. 8.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) turmeric powder (b) a pencil and tape (c) a ruler (d) a string
9. 9.⚖️ 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 keep it the same (c) we measure it
10. 10.🕰️ A pendulum takes 2 seconds for one swing. How many swings does it make in 32 seconds?
11. 11.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
12. 12.🧺 Do we need a ruler for the pendulum? (a) not needed (b) needed
13. 13.🧺 Which of these is not needed for the pendulum? (a) a heavy nut or washer (b) a string (c) a pencil and tape (d) a balloon
14. 14.🕰️ A pendulum makes 5 swings in 15 seconds. How many seconds does one swing take?
15. 15.True or false: a string is not needed for the pendulum. (a) False (b) True
16. 16.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) much faster (b) much slower (c) about the same (d) it cannot swing
17. 17.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
18. 18.🧺 Do we need a pencil and tape for the pendulum? (a) not needed (b) needed
19. 19.True or false: a heavy nut or washer is not needed for the pendulum. (a) False (b) True
20. 20.🧺 Which of these is needed for the pendulum? (a) a mirror (b) a magnet (c) turmeric powder (d) a pencil and tape
21. 21.🛟 What is a safe bob for a home pendulum? (a) a heavy brick (b) a small nut or washer (c) a sharp tool (d) a glass bottle
22. 22.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
24. 24.⚖️ 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
25. 25.📘 What pulls the pendulum bob back down after each swing? (a) gravity (b) the string (c) magnetism (d) the wind
26. 26.🕰️ Which old clock uses a pendulum to keep time? (a) a grandfather clock (b) a sundial (c) a phone (d) a digital watch
27. 27.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the string length is what we measure. (a) False (b) True
28. 28.🧺 Do we need a stopwatch for the pendulum? (a) needed (b) not needed
29. 29.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it doubles (c) it stays the same (d) it halves
30. 30.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a ruler (c) a string (d) a magnet
31. 31.True or false: a ruler is needed for the pendulum. (a) False (b) True
32. 32.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a ruler (d) a balloon
33. 33.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
34. 34.⚖️ 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 measure it (c) we keep it the same
35. 35.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?
36. 36.⚖️ 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) the same hook (d) the string length
37. 37.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) yeast (b) a pencil and tape (c) a heavy nut or washer (d) a stopwatch
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 measure it (c) we keep it the same
39. 39.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) the bob could hit you (c) it is magnetic (d) it is wet
40. 40.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?

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