Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 709 · 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 simple machine is a crane? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
2. 2.True or false: a magnet is not needed for the thread-reel pulley. (a) True (b) False
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
5. 5.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a ramp (c) a well pulley (d) a doorknob
6. 6.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) the bucket floats (c) pulling down is easier (d) the rope gets shorter
7. 7.⚙️ Which of these is a wheel and axle? (a) a steering wheel (b) a crowbar (c) a slide (d) a sloping road
8. 8.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) zero (c) the same (d) double
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) False (b) True
10. 10.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a pencil (c) a magnet (d) turmeric powder
11. 11.⚖️ 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 measure it (c) we change it
12. 12.True or false: a well pulley uses a pulley. (a) True (b) False
13. 13.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) adds weight (c) makes it magnetic (d) changes pull direction
14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a balloon (c) an empty thread reel (d) a pencil
15. 15.⚖️ 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
16. 16.⚙️ Which simple machine is a steering wheel? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
17. 17.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 40 cm (c) 10 cm (d) 5 cm
18. 18.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) string (d) yeast
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 keep it the same (b) we measure it (c) we change it
20. 20.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a magnet (c) coins as the load (d) string
21. 21.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) an empty thread reel (c) turmeric powder (d) a balloon
22. 22.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) battery (c) rope (d) magnet
23. 23.⚖️ 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
24. 24.⚙️ Which simple machine is a slide? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
25. 25.⚖️ 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) how hard we must pull (c) the lifting height
26. 26.⚖️ 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
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a battery cell (c) a small paper cup (d) an empty thread reel
28. 28.⚖️ 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) False (b) True
29. 29.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) turmeric powder (c) yeast (d) string
30. 30.True or false: a tap handle is a lever. (a) True (b) False
31. 31.⚖️ 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 lifting height (d) number of pulleys
32. 32.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
33. 33.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) an empty thread reel (d) turmeric powder
34. 34.⚙️ Which of these is a lever? (a) a well pulley (b) a crane (c) a ramp (d) a see-saw
35. 35.⚖️ 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) False (b) True
36. 36.⚙️ Which simple machine is a well pulley? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
37. 37.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
38. 38.🧺 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) a small paper cup
39. 39.⚙️ Which simple machine is a ramp? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
40. 40.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) up (c) in a circle (d) sideways

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