Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 340 · 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 of these uses a pulley? (a) a doorknob (b) a slide (c) a crane (d) a spoon lifting a lid
2. 2.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) coins as the load (d) a magnet
3. 3.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) yeast (c) a battery cell (d) a mirror
5. 5.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
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.⚙️ Which of these uses a pulley? (a) a tap handle (b) a flagpole (c) a steering wheel (d) a crowbar
8. 8.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
9. 9.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a balloon (c) a mirror (d) an empty thread reel
10. 10.⚖️ 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
11. 11.⚖️ 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
12. 12.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
13. 13.⚙️ Which simple machine is a slide? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is the one thing we change. (a) False (b) True
15. 15.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 40 cm (c) 5 cm (d) 10 cm
16. 16.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a well pulley (c) a crane (d) a tap handle
17. 17.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) rope (c) battery (d) nail
18. 18.⚖️ 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
19. 19.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it can hurt your finger (d) it gets wet
20. 20.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it is magnetic (d) it could fall on you
21. 21.True or false: a doorknob is a wheel and axle. (a) True (b) False
22. 22.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
23. 23.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) turmeric powder (c) a small paper cup (d) string
24. 24.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a crowbar (c) a flagpole (d) a tap handle
25. 25.⚙️ Which of these uses a pulley? (a) a well pulley (b) a ramp (c) a spoon lifting a lid (d) a see-saw
26. 26.⚙️ Which of these is a wheel and axle? (a) a sloping road (b) a bottle opener (c) a spoon lifting a lid (d) a doorknob
27. 27.True or false: a spoon lifting a lid is an inclined plane. (a) True (b) False
28. 28.⚖️ 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
29. 29.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
30. 30.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) pulling down is easier (c) water gets lighter (d) the rope gets shorter
31. 31.⚙️ Which of these is an inclined plane? (a) a slide (b) a doorknob (c) a crowbar (d) a well pulley
32. 32.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
33. 33.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
34. 34.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
35. 35.⚙️ Which of these is a lever? (a) a flagpole (b) a crane (c) a well pulley (d) a spoon lifting a lid
36. 36.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a magnet (c) string (d) a balloon
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) how hard we must pull (c) the same cup of coins (d) the same string
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) True (b) False
39. 39.⚖️ 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 measure it (c) we keep it the same
40. 40.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a ramp (c) a bottle opener (d) a spoon lifting a lid

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