Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 294 · 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.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) True (b) False
2. 2.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 10 cm (c) 40 cm (d) 5 cm
3. 3.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) changes pull direction (c) makes it magnetic (d) halves the weight
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) turmeric powder (c) a battery cell (d) a mirror
5. 5.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is kept the same. (a) True (b) False
7. 7.True or false: a flagpole uses a pulley. (a) True (b) False
8. 8.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) in the tap (c) on the flagpole (d) on the blackboard
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) how hard we must pull (b) the same cup of coins (c) the same string (d) number of pulleys
10. 10.⚙️ Which simple machine is a tap handle? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
11. 11.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a mirror (c) a pencil (d) turmeric powder
12. 12.🛟 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
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) a small paper cup (c) an empty thread reel (d) a pencil
15. 15.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) yeast (c) an empty thread reel (d) a small paper cup
16. 16.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) in a circle (c) down (d) sideways
17. 17.True or false: string is needed for the thread-reel pulley. (a) True (b) False
18. 18.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
19. 19.True or false: a sloping road is a wheel and axle. (a) False (b) True
20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) yeast (c) a small paper cup (d) a battery cell
21. 21.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
22. 22.True or false: a spoon lifting a lid is a wheel and axle. (a) False (b) True
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.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a slide (c) a crane (d) a sloping road
25. 25.⚙️ Which simple machine is a see-saw? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
26. 26.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) coins as the load (d) turmeric powder
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
28. 28.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
29. 29.True or false: a see-saw uses a pulley. (a) True (b) False
30. 30.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it can hurt your finger (c) it gets wet (d) it turns blue
31. 31.⚖️ 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 same cup of coins (c) number of pulleys
32. 32.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
33. 33.⚙️ Which simple machine is a steering wheel? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
34. 34.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a mirror (c) coins as the load (d) a small paper cup
35. 35.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a bottle opener (c) a doorknob (d) a slide
36. 36.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
37. 37.True or false: a doorknob is a wheel and axle. (a) False (b) True
38. 38.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
39. 39.⚖️ 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 keep it the same (b) we change it (c) we measure it
40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) True (b) False

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