Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 337 · 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.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.🕰️ A pendulum makes 15 swings in 30 seconds. How many seconds does one swing take?
4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) how far we pull it back (c) the weight of the bob (d) time for 10 swings
5. 5.⚖️ 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
6. 6.⚖️ 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) the same hook (c) the string length (d) time for 10 swings
7. 7.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 4 seconds?
8. 8.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a small nut or washer (c) a glass bottle (d) a heavy brick
9. 9.⚖️ 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 keep it the same (c) we measure it
10. 10.⚖️ 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
11. 11.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a magnet (b) a pencil and tape (c) a heavy nut or washer (d) a stopwatch
12. 12.🧺 Which of these is not needed for the pendulum? (a) a ruler (b) a stopwatch (c) a balloon (d) a string
13. 13.🕰️ A pendulum makes 10 swings in 10 seconds. How many seconds does one swing take?
14. 14.📘 What pulls the pendulum bob back down after each swing? (a) magnetism (b) the string (c) gravity (d) the wind
15. 15.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a battery cell (b) a pencil and tape (c) a heavy nut or washer (d) a stopwatch
16. 16.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) turmeric powder (c) a pencil and tape (d) a ruler
17. 17.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is what we measure. (a) False (b) True
18. 18.🕰️ Which old clock uses a pendulum to keep time? (a) a digital watch (b) a sundial (c) a grandfather clock (d) a phone
19. 19.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it becomes 4 times (b) it halves (c) it stays the same (d) it doubles
20. 20.🧺 Do we need a ruler for the pendulum? (a) needed (b) not needed
21. 21.🧺 Do we need a pencil and tape for the pendulum? (a) needed (b) not needed
22. 22.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) one swing is too slow (b) 10 is a lucky number (c) it is more accurate (d) it is more fun
23. 23.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) it cannot swing (b) about the same (c) much faster (d) much slower
24. 24.🧺 Do we need a heavy nut or washer for the pendulum? (a) needed (b) not needed
25. 25.🕰️ Which change makes a pendulum swing more slowly? (a) a heavier bob (b) a lighter bob (c) a shorter string (d) a longer string
26. 26.True or false: a balloon is not needed for the pendulum. (a) False (b) True
27. 27.True or false: a pencil and tape is not needed for the pendulum. (a) True (b) False
28. 28.🛟 Why should you stand back from a swinging pendulum? (a) it is hot (b) it is magnetic (c) it is wet (d) the bob could hit you
29. 29.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
30. 30.True or false: a mirror is not needed for the pendulum. (a) False (b) True
31. 31.🕰️ A pendulum makes 15 swings in 15 seconds. How many seconds does one swing take?
32. 32.🧺 Which of these is needed for the pendulum? (a) yeast (b) a balloon (c) a mirror (d) a heavy nut or washer
33. 33.🧺 Which of these is not needed for the pendulum? (a) a pencil and tape (b) a heavy nut or washer (c) a string (d) a battery cell
34. 34.True or false: a stopwatch is needed for the pendulum. (a) False (b) True
35. 35.⚖️ 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
36. 36.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is what we measure. (a) True (b) False
37. 37.⚖️ 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
38. 38.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 7 seconds?
39. 39.🧺 Which of these is not needed for the pendulum? (a) a magnet (b) a string (c) a pencil and tape (d) a ruler
40. 40.🧺 Do we need turmeric powder for the pendulum? (a) needed (b) not needed

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids