Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 621 · 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.⚙️ Which of these is a wheel and axle? (a) a crane (b) a tap handle (c) a flagpole (d) a slide
2. 2.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a small paper cup (c) yeast (d) a balloon
3. 3.🛟 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
4. 4.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a slide (c) a see-saw (d) a crane
5. 5.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
6. 6.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) magnet (c) rope (d) battery
7. 7.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 10 cm (c) 40 cm (d) 20 cm
8. 8.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we change it (b) we keep it the same (c) we measure it
9. 9.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the lifting height (b) number of pulleys (c) how hard we must pull
11. 11.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the blackboard (c) on the bench (d) in the tap
12. 12.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) number of pulleys (c) the same string (d) how hard we must pull
13. 13.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
14. 14.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) an empty thread reel (c) a mirror (d) a pencil
15. 15.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same cup of coins (b) how hard we must pull (c) number of pulleys
16. 16.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
17. 17.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
18. 18.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) up (c) down (d) sideways
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) a mirror (d) a pencil
20. 20.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) the same (d) about half
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the lifting height (b) number of pulleys (c) the same string (d) how hard we must pull
22. 22.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) string (d) a balloon
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) yeast (d) a pencil
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a magnet (c) a small paper cup (d) coins as the load
25. 25.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it can hurt your finger (c) it turns blue (d) it gets longer
26. 26.True or false: a spoon lifting a lid is an inclined plane. (a) False (b) True
27. 27.True or false: a steering wheel is a wheel and axle. (a) False (b) True
28. 28.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
31. 31.⚙️ Which simple machine is a tap handle? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
32. 32.True or false: string is needed for the thread-reel pulley. (a) True (b) False
33. 33.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
34. 34.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
35. 35.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a small paper cup (c) a balloon (d) coins as the load
36. 36.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a pencil (c) a magnet (d) yeast
37. 37.⚙️ Which of these is a lever? (a) a crane (b) a sloping road (c) a crowbar (d) a tap handle
38. 38.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
39. 39.True or false: a crowbar is a wheel and axle. (a) True (b) False
40. 40.⚙️ Which of these is a lever? (a) a well pulley (b) a flagpole (c) a crane (d) a spoon lifting a lid

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