Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 953 · 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 simple machine is a see-saw? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
2. 2.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) turmeric powder (d) a small paper cup
4. 4.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
5. 5.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a bottle opener (c) a crane (d) a sloping road
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) a pencil (d) a mirror
7. 7.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a ramp (c) a well pulley (d) a slide
8. 8.🛟 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
9. 9.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) the same cup of coins (c) the lifting height (d) how hard we must pull
11. 11.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
12. 12.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) True (b) False
13. 13.⚖️ 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 measure it (c) we change it
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we keep it the same (b) we change it (c) we measure it
15. 15.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) coins as the load (c) a battery cell (d) string
16. 16.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) a battery cell (c) turmeric powder (d) a magnet
17. 17.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) the lifting height (c) number of pulleys
18. 18.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
19. 19.⚖️ 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) the same cup of coins (c) number of pulleys (d) how hard we must pull
20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) yeast (c) a battery cell (d) coins as the load
21. 21.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
22. 22.⚙️ Which simple machine is a doorknob? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
23. 23.⚙️ Which of these is a lever? (a) a tap handle (b) a crane (c) a see-saw (d) a flagpole
24. 24.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
25. 25.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) adds weight (c) makes it magnetic (d) halves the weight
26. 26.⚖️ 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) the same string (c) how hard we must pull
27. 27.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
28. 28.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) about half (d) double
29. 29.True or false: a sloping road uses a pulley. (a) False (b) True
30. 30.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a steering wheel (c) a spoon lifting a lid (d) a ramp
31. 31.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) False (b) True
32. 32.🧺 Which of these is not needed for the thread-reel pulley? (a) turmeric powder (b) a pencil (c) coins as the load (d) string
33. 33.True or false: a slide is an inclined plane. (a) False (b) True
34. 34.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) nail (c) battery (d) magnet
35. 35.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a balloon (c) a pencil (d) string
36. 36.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the flagpole (c) on the bench (d) in the tap
37. 37.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
38. 38.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
39. 39.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 40 cm (c) 20 cm (d) 10 cm
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) yeast (c) a small paper cup (d) an empty thread reel

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