Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 597 · 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: number of pulleys is kept the same. (a) False (b) True
2. 2.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a slide (c) a crane (d) a bottle opener
3. 3.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) turmeric powder (c) a pencil (d) a battery cell
4. 4.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) an empty thread reel (c) a mirror (d) a pencil
6. 6.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
7. 7.True or false: turmeric powder is not needed for the thread-reel pulley. (a) False (b) True
8. 8.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
9. 9.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
10. 10.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) a pencil (c) an empty thread reel (d) a small paper cup
11. 11.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a steering wheel (c) a see-saw (d) a sloping road
12. 12.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
13. 13.⚖️ 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) how hard we must pull (d) the lifting height
14. 14.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
15. 15.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it can hurt your finger (c) it gets longer (d) it gets wet
16. 16.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
17. 17.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) rope (d) magnet
18. 18.⚖️ 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
19. 19.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) down (c) up (d) sideways
20. 20.⚙️ Which simple machine is a doorknob? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
21. 21.True or false: a crowbar is a lever. (a) False (b) True
22. 22.🧺 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) an empty thread reel
23. 23.⚙️ Which simple machine is a see-saw? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) a mirror (d) an empty thread reel
25. 25.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a crowbar (c) a doorknob (d) a slide
26. 26.True or false: string is needed for the thread-reel pulley. (a) False (b) True
27. 27.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
28. 28.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
29. 29.🏗️ Why is a pulley used to lift water from a deep well? (a) pulling down is easier (b) the bucket floats (c) the rope gets shorter (d) water gets lighter
30. 30.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) zero (c) about half (d) double
31. 31.⚖️ 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 string
32. 32.True or false: a steering wheel is an inclined plane. (a) False (b) True
33. 33.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
34. 34.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
35. 35.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
36. 36.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is what we measure. (a) True (b) False
38. 38.True or false: a mirror is needed for the thread-reel pulley. (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 keep it the same (c) we measure it
40. 40.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) makes it magnetic (c) changes pull direction (d) adds weight

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