Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 609 · 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? True or false: how hard we must pull is the one thing we change. (a) False (b) True
2. 2.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
3. 3.⚖️ 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 string (c) number of pulleys (d) the lifting height
4. 4.True or false: a well pulley is a wheel and axle. (a) True (b) False
5. 5.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) coins as the load (c) a battery cell (d) a mirror
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) a mirror (d) a pencil
7. 7.True or false: a crowbar is a lever. (a) False (b) True
8. 8.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
9. 9.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) an empty thread reel (d) a magnet
11. 11.⚙️ Which of these uses a pulley? (a) a see-saw (b) a spoon lifting a lid (c) a well pulley (d) a tap handle
12. 12.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
13. 13.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a battery cell (c) a pencil (d) string
15. 15.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) battery (c) magnet (d) rope
16. 16.True or false: a battery cell is not needed for the thread-reel pulley. (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 lifting height”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.🧺 Which of these is not needed for the thread-reel pulley? (a) a battery cell (b) a small paper cup (c) coins as the load (d) an empty thread reel
19. 19.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it might sing (d) it gets hot
20. 20.True or false: a spoon lifting a lid is a lever. (a) True (b) False
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) an empty thread reel (d) turmeric powder
22. 22.⚖️ 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 measure it (b) we keep it the same (c) we change it
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a balloon (c) string (d) a small paper cup
24. 24.⚙️ Which simple machine is a crowbar? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
25. 25.⚙️ Which simple machine is a well pulley? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
26. 26.⚖️ 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
27. 27.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
28. 28.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it gets wet (d) it can hurt your finger
29. 29.⚖️ 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 change it (b) we measure it (c) we keep it the same
30. 30.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
31. 31.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a slide (c) a doorknob (d) a see-saw
32. 32.⚙️ Which of these is an inclined plane? (a) a ramp (b) a crowbar (c) a bottle opener (d) a doorknob
33. 33.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a small paper cup (c) yeast (d) a battery cell
34. 34.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
35. 35.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) changes pull direction (c) halves the weight (d) adds weight
36. 36.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
37. 37.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) the same (c) easier (d) impossible
38. 38.⚙️ Which simple machine is a doorknob? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
39. 39.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) a battery cell (c) turmeric powder (d) a mirror
40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same string (b) how hard we must pull (c) number of pulleys

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