Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 507 · 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 needed for the thread-reel pulley? (a) a balloon (b) coins as the load (c) turmeric powder (d) a magnet
2. 2.🧺 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) string (d) a balloon
3. 3.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
4. 4.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
5. 5.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 40 cm (c) 5 cm (d) 20 cm
6. 6.True or false: a sloping road is an inclined plane. (a) True (b) False
7. 7.🧺 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) an empty thread reel (d) a battery cell
8. 8.⚙️ Which of these is a wheel and axle? (a) a crane (b) a sloping road (c) a slide (d) a steering wheel
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True
11. 11.⚙️ Which simple machine is a spoon lifting a lid? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
12. 12.🏗️ 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
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 measure it (b) we keep it the same (c) we change it
14. 14.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the flagpole (c) on the blackboard (d) on the bench
15. 15.True or false: a crane is a lever. (a) True (b) False
16. 16.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) easier (c) impossible (d) the same
17. 17.True or false: a steering wheel is a wheel and axle. (a) True (b) False
18. 18.⚖️ 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 lifting height (c) how hard we must pull (d) the same cup of coins
19. 19.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a bottle opener (c) a sloping road (d) a crane
20. 20.⚖️ 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
21. 21.⚙️ Which of these is a lever? (a) a doorknob (b) a flagpole (c) a see-saw (d) a sloping road
22. 22.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
23. 23.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it might sing (d) it could fall on you
24. 24.⚖️ 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) how hard we must pull (c) the same cup of coins (d) number of pulleys
25. 25.True or false: a well pulley is a wheel and axle. (a) True (b) False
26. 26.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
27. 27.⚙️ Which of these is a lever? (a) a tap handle (b) a doorknob (c) a spoon lifting a lid (d) a ramp
28. 28.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
29. 29.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it gets wet (d) it can hurt your finger
30. 30.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) yeast (c) a magnet (d) a pencil
31. 31.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a magnet (c) a pencil (d) coins as the load
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) True (b) False
33. 33.True or false: turmeric powder is not needed for the thread-reel pulley. (a) False (b) True
34. 34.True or false: a crowbar is a wheel and axle. (a) False (b) True
35. 35.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) about half (c) zero (d) the same
36. 36.⚖️ 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 measure it (b) we change it (c) we keep it the same
37. 37.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
38. 38.🧺 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
39. 39.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
40. 40.True or false: string is needed for the thread-reel pulley. (a) False (b) True

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