Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 381 · 40 questions

What you do (Pull down, lift up): 1. Push the pencil through the thread reel; an adult holds the pencil ends level. 2. Tie the paper cup to one end of the string and lay the string over the reel. 3. Put coins in the cup and pull the other end down. 4. Feel how hard you pull; never stand under the load or wrap string round your fingers.

1. 1.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
2. 2.⚙️ Which simple machine is a crane? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) string (d) turmeric powder
4. 4.True or false: a ramp is an inclined plane. (a) False (b) True
5. 5.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) turmeric powder (c) a balloon (d) a magnet
6. 6.True or false: a slide uses a pulley. (a) True (b) False
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same cup of coins”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
9. 9.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it is magnetic (c) it might sing (d) it gets hot
10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) number of pulleys (b) how hard we must pull (c) the same string
11. 11.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) a mirror (c) yeast (d) turmeric powder
12. 12.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) about half (d) zero
13. 13.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “how hard we must pull”? (a) we keep it the same (b) we change it (c) we measure it
15. 15.True or false: a well pulley uses a pulley. (a) False (b) True
16. 16.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
17. 17.⚙️ Which of these uses a pulley? (a) a doorknob (b) a flagpole (c) a slide (d) a bottle opener
18. 18.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) coins as the load (c) a small paper cup (d) string
19. 19.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) easier (c) impossible (d) the same
20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
22. 22.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
23. 23.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.True or false: a slide is a lever. (a) False (b) True
25. 25.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
26. 26.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) sideways (c) in a circle (d) up
27. 27.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) a magnet (d) a small paper cup
28. 28.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a pencil (c) yeast (d) a mirror
29. 29.⚙️ Which of these is a lever? (a) a doorknob (b) a crane (c) a crowbar (d) a tap handle
30. 30.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) a mirror (d) coins as the load
31. 31.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
32. 32.⚙️ Which of these is an inclined plane? (a) a ramp (b) a tap handle (c) a bottle opener (d) a well pulley
33. 33.⚙️ Which simple machine is a doorknob? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
34. 34.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a mirror (c) an empty thread reel (d) a pencil
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) the same string (c) number of pulleys (d) how hard we must pull
36. 36.True or false: a bottle opener is a wheel and axle. (a) False (b) True
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) the same string (c) the lifting height (d) how hard we must pull
38. 38.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
39. 39.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a balloon (c) string (d) a small paper cup
40. 40.⚙️ Which of these uses a pulley? (a) a see-saw (b) a steering wheel (c) a crane (d) a sloping road

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