Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 437 · 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.⚖️ 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
2. 2.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) the bob could hit you (c) it is wet (d) it is hot
3. 3.🧺 Do we need a heavy nut or washer for the pendulum? (a) not needed (b) needed
4. 4.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it stays the same (c) it doubles (d) it halves
5. 5.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a heavy nut or washer (c) a magnet (d) a pencil and tape
6. 6.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
7. 7.True or false: a stopwatch is not needed for the pendulum. (a) True (b) False
8. 8.True or false: a magnet is not needed for the pendulum. (a) False (b) True
9. 9.True or false: yeast is needed for the pendulum. (a) True (b) False
10. 10.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) 10 is a lucky number (c) it is more fun (d) one swing is too slow
11. 11.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) yeast (c) a ruler (d) a stopwatch
12. 12.⚖️ 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 same hook (d) the string length
13. 13.🛟 What is a safe bob for a home pendulum? (a) a glass bottle (b) a small nut or washer (c) a heavy brick (d) a sharp tool
14. 14.🕰️ A pendulum makes 10 swings in 30 seconds. How many seconds does one swing take?
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a balloon (c) a string (d) a ruler
16. 16.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a grandfather clock (c) a phone (d) a sundial
17. 17.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 18 seconds?
18. 18.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
19. 19.⚖️ 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
20. 20.🧺 Do we need a magnet for the pendulum? (a) not needed (b) needed
21. 21.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a string (b) a stopwatch (c) a pencil and tape (d) a magnet
22. 22.True or false: a stopwatch is needed for the pendulum. (a) True (b) False
23. 23.⚖️ 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) False (b) True
24. 24.🔮 Predict: you make the string shorter. The swings get ___. (a) stopped (b) quicker (c) slower (d) heavier
25. 25.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 6 seconds?
26. 26.True or false: a string is not needed for the pendulum. (a) True (b) False
27. 27.⚖️ 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
28. 28.🧺 Do we need a balloon for the pendulum? (a) not needed (b) needed
29. 29.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a heavy nut or washer (c) a stopwatch (d) a battery cell
30. 30.⚖️ 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) True (b) False
31. 31.🧺 Which of these is needed for the pendulum? (a) a balloon (b) a string (c) a magnet (d) a mirror
32. 32.🧺 Which of these is needed for the pendulum? (a) a battery cell (b) a balloon (c) a magnet (d) a ruler
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the weight of the bob (b) the string length (c) time for 10 swings
34. 34.⚖️ 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
35. 35.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much slower (c) much faster (d) it cannot swing
36. 36.📘 What pulls the pendulum bob back down after each swing? (a) the string (b) magnetism (c) gravity (d) the wind
37. 37.True or false: a mirror is needed for the pendulum. (a) False (b) True
38. 38.True or false: a ruler is not needed for the pendulum. (a) True (b) False
39. 39.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a battery cell (c) yeast (d) a pencil and tape
40. 40.🕰️ Does a heavier bob change the swing time? (a) yes, much slower (b) yes, much faster (c) it stops swinging (d) no, hardly at all

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