Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 698 · 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 the one thing we change? (a) the lifting height (b) the same cup of coins (c) number of pulleys (d) the same string
2. 2.⚙️ Which simple machine is a well pulley? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
3. 3.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it could fall on you (d) it might sing
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a mirror (c) turmeric powder (d) a small paper cup
5. 5.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
6. 6.True or false: a magnet is not needed for the thread-reel pulley. (a) True (b) False
7. 7.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) turmeric powder (c) a mirror (d) a magnet
8. 8.⚖️ 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
9. 9.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
10. 10.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a mirror (c) yeast (d) an empty thread reel
11. 11.⚙️ Which of these is a lever? (a) a well pulley (b) a crane (c) a spoon lifting a lid (d) a sloping road
12. 12.⚖️ 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
13. 13.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
14. 14.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a spoon lifting a lid (c) a tap handle (d) a crane
15. 15.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
16. 16.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 10 cm (c) 5 cm (d) 20 cm
17. 17.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
18. 18.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it can hurt your finger (d) it turns blue
19. 19.True or false: a bottle opener is an inclined plane. (a) False (b) True
20. 20.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
21. 21.True or false: string is needed for the thread-reel pulley. (a) True (b) False
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) False (b) True
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.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
25. 25.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) magnet (c) battery (d) nail
26. 26.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) pulling down is easier (c) the rope gets shorter (d) the bucket floats
27. 27.⚖️ 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) the same cup of coins (c) the lifting height (d) how hard we must pull
28. 28.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a well pulley (c) a see-saw (d) a doorknob
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
30. 30.True or false: a spoon lifting a lid is a lever. (a) True (b) False
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) coins as the load (c) a pencil (d) an empty thread reel
32. 32.⚖️ 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) the same cup of coins (c) number of pulleys
33. 33.True or false: a spoon lifting a lid uses a pulley. (a) True (b) False
34. 34.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
35. 35.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a see-saw (c) a spoon lifting a lid (d) a flagpole
36. 36.⚙️ Which of these is a lever? (a) a sloping road (b) a crowbar (c) a tap handle (d) a doorknob
37. 37.True or false: a flagpole is a lever. (a) False (b) True
38. 38.True or false: a slide is an inclined plane. (a) True (b) False
39. 39.⚙️ Which simple machine is a see-saw? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
40. 40.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed

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