Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 332 · 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.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) in a circle (c) up (d) down
2. 2.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the flagpole (c) in the tap (d) on the bench
3. 3.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) impossible (c) harder (d) the same
4. 4.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a balloon (c) string (d) a pencil
6. 6.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it gets wet (c) it can hurt your finger (d) it turns blue
7. 7.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) the bucket floats (c) pulling down is easier (d) water gets lighter
8. 8.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a bottle opener (c) a crane (d) a ramp
9. 9.True or false: a steering wheel is a lever. (a) True (b) False
10. 10.⚙️ Which of these is a wheel and axle? (a) a slide (b) a bottle opener (c) a doorknob (d) a sloping road
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a pencil (c) a small paper cup (d) a mirror
12. 12.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a bottle opener (c) a spoon lifting a lid (d) a sloping road
13. 13.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) nail (c) magnet (d) battery
14. 14.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
15. 15.True or false: a crane is a lever. (a) False (b) True
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) yeast (d) an empty thread reel
17. 17.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) turmeric powder (c) a balloon (d) a mirror
18. 18.True or false: a see-saw uses a pulley. (a) False (b) True
19. 19.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) True (b) False
21. 21.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it is magnetic (d) it could fall on you
22. 22.True or false: a well pulley is an inclined plane. (a) True (b) False
23. 23.⚙️ Which simple machine is a crane? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
24. 24.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
25. 25.⚖️ 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 change it (b) we measure it (c) we keep it the same
26. 26.⚖️ 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 lifting height (c) how hard we must pull (d) the same string
27. 27.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a mirror (c) coins as the load (d) an empty thread reel
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) False (b) True
29. 29.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
30. 30.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
31. 31.True or false: a doorknob is a lever. (a) False (b) True
32. 32.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) double (d) about half
33. 33.⚙️ Which simple machine is a doorknob? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
34. 34.⚖️ 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 measure it (c) we keep it the same
35. 35.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
36. 36.True or false: a flagpole is a lever. (a) True (b) False
37. 37.True or false: coins as the load is needed for the thread-reel pulley. (a) False (b) True
38. 38.True or false: a crane uses a pulley. (a) True (b) False
39. 39.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) False (b) True
40. 40.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a well pulley (c) a steering wheel (d) a flagpole

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