Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 236 · 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.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
2. 2.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a balloon (c) a small paper cup (d) an empty thread reel
3. 3.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
4. 4.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
5. 5.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) battery (c) magnet (d) rope
6. 6.⚖️ 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
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the same string (b) number of pulleys (c) how hard we must pull (d) the same cup of coins
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) an empty thread reel (d) a magnet
9. 9.⚖️ 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) True (b) False
10. 10.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) makes it magnetic (c) halves the weight (d) adds weight
11. 11.⚖️ 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 keep it the same (b) we measure it (c) we change it
12. 12.⚖️ 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
13. 13.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
14. 14.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) the bucket floats (c) water gets lighter (d) pulling down is easier
15. 15.⚖️ 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 same cup of coins
16. 16.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a magnet (c) an empty thread reel (d) a small paper cup
17. 17.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
18. 18.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
19. 19.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
20. 20.True or false: a slide is a wheel and axle. (a) True (b) False
21. 21.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 40 cm (c) 10 cm (d) 5 cm
22. 22.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) an empty thread reel (d) turmeric powder
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) string (c) a pencil (d) an empty thread reel
24. 24.⚙️ Which of these uses a pulley? (a) a see-saw (b) a spoon lifting a lid (c) a well pulley (d) a tap handle
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) True (b) False
26. 26.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) False (b) True
27. 27.⚙️ Which simple machine is a crowbar? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
28. 28.⚙️ Which simple machine is a tap handle? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
29. 29.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
30. 30.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it can hurt your finger (c) it gets wet (d) it gets longer
31. 31.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
32. 32.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
33. 33.⚙️ Which simple machine is a steering wheel? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
34. 34.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) a mirror (c) a magnet (d) yeast
35. 35.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) turmeric powder (c) a battery cell (d) yeast
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) a balloon (d) a pencil
37. 37.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
38. 38.True or false: a slide is an inclined plane. (a) True (b) False
39. 39.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) True (b) False
40. 40.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a bottle opener (c) a flagpole (d) a see-saw

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