Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 751 · 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 is a lever? (a) a crowbar (b) a tap handle (c) a doorknob (d) a slide
2. 2.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a battery cell (c) a small paper cup (d) string
3. 3.⚖️ 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 change it (c) we keep it the same
4. 4.⚙️ Which simple machine is a ramp? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
5. 5.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) magnet (c) battery (d) rope
6. 6.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) the same (c) harder (d) impossible
7. 7.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a bottle opener (c) a ramp (d) a see-saw
8. 8.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it might sing (c) it is magnetic (d) it gets hot
9. 9.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
10. 10.⚖️ 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) False (b) True
11. 11.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) adds weight (c) changes pull direction (d) makes it magnetic
12. 12.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a tap handle (c) a crowbar (d) a well pulley
13. 13.⚖️ 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 measure it (c) we keep it the same
14. 14.⚖️ 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
15. 15.⚙️ Which of these is a lever? (a) a flagpole (b) a tap handle (c) a bottle opener (d) a steering wheel
16. 16.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 5 cm (c) 40 cm (d) 10 cm
17. 17.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
18. 18.⚙️ Which of these uses a pulley? (a) a tap handle (b) a bottle opener (c) a crane (d) a doorknob
19. 19.True or false: a steering wheel is a wheel and axle. (a) False (b) True
20. 20.⚖️ 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) the same string (c) how hard we must pull (d) the same cup of coins
21. 21.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
22. 22.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) a balloon (d) coins as the load
23. 23.⚖️ 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
24. 24.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) in a circle (c) up (d) sideways
25. 25.True or false: a sloping road uses a pulley. (a) True (b) False
26. 26.⚖️ 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 keep it the same (c) we measure it
27. 27.True or false: string is needed for the thread-reel pulley. (a) True (b) False
28. 28.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a balloon (c) string (d) yeast
29. 29.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) a magnet (d) a pencil
31. 31.⚙️ Which simple machine is a crowbar? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) True (b) False
33. 33.True or false: a see-saw is a lever. (a) False (b) True
34. 34.⚖️ 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
35. 35.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets longer (c) it turns blue (d) it gets wet
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) yeast (d) an empty thread reel
37. 37.⚖️ 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 same cup of coins (c) how hard we must pull (d) the lifting height
38. 38.⚙️ Which simple machine is a see-saw? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
39. 39.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) turmeric powder (c) a magnet (d) a small paper cup
40. 40.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever

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