Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 803 · 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.True or false: a crowbar is a wheel and axle. (a) True (b) False
2. 2.⚙️ Which simple machine is a doorknob? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
3. 3.⚖️ 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) False (b) True
4. 4.⚙️ Which simple machine is a steering wheel? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
5. 5.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) rope (c) battery (d) magnet
6. 6.⚖️ 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 keep it the same (c) we change it
7. 7.True or false: a see-saw is an inclined plane. (a) False (b) True
8. 8.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) double (c) the same (d) zero
9. 9.⚖️ 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) the lifting height (c) number of pulleys (d) how hard we must pull
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) a small paper cup (d) a balloon
11. 11.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
12. 12.⚙️ Which of these is a lever? (a) a crowbar (b) a steering wheel (c) a tap handle (d) a flagpole
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) True (b) False
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) False (b) True
15. 15.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
16. 16.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a slide (c) a doorknob (d) a well pulley
17. 17.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
18. 18.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) a magnet (d) coins as the load
19. 19.⚙️ Which of these uses a pulley? (a) a ramp (b) a crane (c) a bottle opener (d) a tap handle
20. 20.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
21. 21.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 5 cm (c) 10 cm (d) 20 cm
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) how hard we must pull (b) the same cup of coins (c) the lifting height (d) number of pulleys
25. 25.⚖️ 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
26. 26.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) coins as the load (d) turmeric powder
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a magnet (c) a small paper cup (d) coins as the load
28. 28.⚖️ 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 change it (b) we measure it (c) we keep it the same
29. 29.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it could fall on you (c) it is magnetic (d) it gets hot
30. 30.True or false: a crowbar is an inclined plane. (a) False (b) True
31. 31.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) easier (c) the same (d) harder
32. 32.⚖️ 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
33. 33.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it turns blue (d) it can hurt your finger
34. 34.⚙️ Which of these uses a pulley? (a) a doorknob (b) a ramp (c) a flagpole (d) a crowbar
35. 35.⚙️ Which of these is a wheel and axle? (a) a sloping road (b) a tap handle (c) a bottle opener (d) a slide
36. 36.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) a balloon (c) a mirror (d) a battery cell
37. 37.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a small paper cup (c) a balloon (d) a magnet
38. 38.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) changes pull direction (c) adds weight (d) makes it magnetic
39. 39.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a battery cell (c) a magnet (d) an empty thread reel
40. 40.True or false: a ramp uses a pulley. (a) False (b) True

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