Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 356 · 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) yeast (b) turmeric powder (c) a magnet (d) string
2. 2.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) string (d) a battery cell
4. 4.⚙️ Which simple machine is a doorknob? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
5. 5.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) down (c) up (d) in a circle
6. 6.⚙️ Which of these is a lever? (a) a crane (b) a see-saw (c) a steering wheel (d) a tap handle
7. 7.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) easier (c) harder (d) the same
8. 8.⚖️ 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
9. 9.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
10. 10.True or false: a well pulley uses a pulley. (a) False (b) True
11. 11.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
12. 12.⚙️ Which simple machine is a see-saw? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
13. 13.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
14. 14.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the bench (c) in the tap (d) on the blackboard
15. 15.⚙️ Which of these is a lever? (a) a sloping road (b) a spoon lifting a lid (c) a ramp (d) a well pulley
16. 16.⚖️ 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
17. 17.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a slide (c) a spoon lifting a lid (d) a crowbar
18. 18.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
19. 19.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
20. 20.🧺 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) string (d) turmeric powder
21. 21.⚖️ 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
22. 22.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) magnet (c) battery (d) rope
23. 23.True or false: a well pulley is a wheel and axle. (a) True (b) False
24. 24.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
25. 25.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
26. 26.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) the rope gets shorter (c) pulling down is easier (d) the bucket floats
27. 27.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
28. 28.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 20 cm (c) 5 cm (d) 40 cm
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.True or false: a see-saw is an inclined plane. (a) True (b) False
31. 31.⚖️ 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
32. 32.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets longer (c) it can hurt your finger (d) it gets wet
33. 33.⚖️ 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 keep it the same (c) we change it
34. 34.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a bottle opener (c) a ramp (d) a crane
35. 35.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) makes it magnetic (c) adds weight (d) changes pull direction
36. 36.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) string (d) a mirror
38. 38.⚖️ 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 string (c) number of pulleys (d) the same cup of coins
39. 39.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) coins as the load (c) a magnet (d) a battery cell
40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) False (b) True

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