Pulley STEM Project Worksheet

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

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