Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 271 · 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? Which of these is what we measure? (a) number of pulleys (b) how hard we must pull (c) the same string (d) the same cup of coins
2. 2.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) battery (c) nail (d) rope
3. 3.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
4. 4.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it might sing (c) it is magnetic (d) it could fall on you
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) yeast (d) a small paper cup
6. 6.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 10 cm (c) 20 cm (d) 40 cm
7. 7.⚙️ Which simple machine is a flagpole? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
8. 8.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) True (b) False
9. 9.⚖️ 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 lifting height
10. 10.True or false: a ramp uses a pulley. (a) True (b) False
11. 11.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a balloon (c) a small paper cup (d) turmeric powder
12. 12.🛟 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
13. 13.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) impossible (d) easier
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) True (b) False
15. 15.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) the same (d) about half
16. 16.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) sideways (c) in a circle (d) down
17. 17.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
18. 18.⚙️ Which of these is an inclined plane? (a) a crane (b) a tap handle (c) a sloping road (d) a steering wheel
19. 19.⚖️ 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 change it (c) we keep it the same
20. 20.⚙️ Which of these is a lever? (a) a flagpole (b) a crowbar (c) a slide (d) a sloping road
21. 21.🧺 Which of these is not needed for the thread-reel pulley? (a) yeast (b) coins as the load (c) a small paper cup (d) an empty thread reel
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
24. 24.⚙️ Which simple machine is a crane? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
25. 25.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) water gets lighter (c) the bucket floats (d) pulling down is easier
26. 26.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a balloon (c) a magnet (d) turmeric powder
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a mirror (c) coins as the load (d) string
28. 28.⚙️ Which of these uses a pulley? (a) a well pulley (b) a see-saw (c) a crowbar (d) a ramp
29. 29.True or false: string is needed for the thread-reel pulley. (a) True (b) False
30. 30.⚖️ 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
31. 31.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
32. 32.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) adds weight (c) makes it magnetic (d) halves the weight
33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) False (b) True
34. 34.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
35. 35.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) coins as the load (c) a balloon (d) an empty thread reel
36. 36.True or false: a see-saw is a wheel and axle. (a) True (b) False
37. 37.⚙️ Which of these is a lever? (a) a sloping road (b) a see-saw (c) a well pulley (d) a flagpole
38. 38.⚖️ 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
39. 39.⚙️ Which simple machine is a steering wheel? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
40. 40.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a crane (c) a spoon lifting a lid (d) a slide

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