Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 955 · 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 simple machine is a well pulley? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
2. 2.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a crowbar (c) a see-saw (d) a well pulley
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 change it (b) we measure it (c) we keep it the same
4. 4.⚙️ Which of these is a wheel and axle? (a) a sloping road (b) a steering wheel (c) a slide (d) a well pulley
5. 5.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) a small paper cup (d) a magnet
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) a small paper cup (c) coins as the load (d) string
7. 7.True or false: a steering wheel uses a pulley. (a) False (b) True
8. 8.⚖️ 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) False (b) True
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a battery cell (c) coins as the load (d) a small paper cup
10. 10.True or false: a doorknob is an inclined plane. (a) True (b) False
11. 11.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) makes it magnetic (c) changes pull direction (d) adds weight
12. 12.True or false: a ramp is a lever. (a) True (b) False
13. 13.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
14. 14.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
15. 15.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) the same string (c) number of pulleys
16. 16.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
17. 17.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) zero (c) about half (d) double
18. 18.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) turmeric powder (c) an empty thread reel (d) a balloon
19. 19.True or false: a bottle opener is an inclined plane. (a) False (b) True
20. 20.⚖️ 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
21. 21.⚖️ 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
22. 22.True or false: a steering wheel is an inclined plane. (a) True (b) False
23. 23.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
24. 24.⚙️ Which simple machine is a doorknob? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
25. 25.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) impossible (c) the same (d) easier
26. 26.⚙️ Which simple machine is a crowbar? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
27. 27.⚙️ Which of these is a lever? (a) a tap handle (b) a slide (c) a sloping road (d) a crowbar
28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a small paper cup (c) string (d) an empty thread reel
29. 29.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) up (c) in a circle (d) down
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) False (b) True
31. 31.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) number of pulleys (c) the lifting height
33. 33.True or false: a slide is a lever. (a) True (b) False
34. 34.⚖️ 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
35. 35.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) nail (c) rope (d) battery
36. 36.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
37. 37.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
38. 38.True or false: a spoon lifting a lid uses a pulley. (a) True (b) False
39. 39.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it could fall on you (d) it gets hot
40. 40.🏗️ 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

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