Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 904 · 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 lever? (a) a see-saw (b) a tap handle (c) a sloping road (d) a flagpole
2. 2.⚖️ 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) number of pulleys (c) how hard we must pull
3. 3.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) an empty thread reel (c) a magnet (d) turmeric powder
4. 4.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
5. 5.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is what we measure. (a) True (b) False
6. 6.🧺 Which of these is not needed for the thread-reel pulley? (a) a battery cell (b) coins as the load (c) a small paper cup (d) an empty thread reel
7. 7.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the blackboard (c) on the flagpole (d) on the bench
8. 8.True or false: a crane uses a pulley. (a) True (b) False
9. 9.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
10. 10.True or false: a slide is an inclined plane. (a) True (b) False
11. 11.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it can hurt your finger (d) it turns blue
12. 12.⚖️ 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
13. 13.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
14. 14.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a small paper cup (c) turmeric powder (d) an empty thread reel
15. 15.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) a battery cell (d) string
16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the same cup of coins (b) the lifting height (c) number of pulleys (d) how hard we must pull
17. 17.🏗️ 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
18. 18.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
19. 19.True or false: a steering wheel is a wheel and axle. (a) False (b) True
20. 20.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
21. 21.⚙️ Which of these is a wheel and axle? (a) a see-saw (b) a doorknob (c) a spoon lifting a lid (d) a well pulley
22. 22.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) string (c) a balloon (d) yeast
23. 23.True or false: a crane is an inclined plane. (a) True (b) False
24. 24.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it could fall on you (c) it might sing (d) it is magnetic
25. 25.⚖️ 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
26. 26.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
27. 27.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) turmeric powder (d) an empty thread reel
28. 28.True or false: a magnet is not needed for the thread-reel pulley. (a) True (b) False
29. 29.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) water gets lighter (c) pulling down is easier (d) the bucket floats
30. 30.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
31. 31.True or false: a spoon lifting a lid is a lever. (a) True (b) False
32. 32.⚖️ 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) number of pulleys (c) the same string
33. 33.⚙️ Which of these is a lever? (a) a slide (b) a crane (c) a bottle opener (d) a well pulley
34. 34.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) harder (d) easier
35. 35.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
36. 36.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
37. 37.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
38. 38.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) battery (c) nail (d) rope
39. 39.🧺 Which of these is not needed for the thread-reel pulley? (a) a balloon (b) an empty thread reel (c) string (d) a pencil
40. 40.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed

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