Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 272 · 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.True or false: a spoon lifting a lid is a lever. (a) False (b) True
2. 2.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it gets hot (c) it might sing (d) it is magnetic
3. 3.🏗️ 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
4. 4.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it can hurt your finger (d) it turns blue
5. 5.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) easier (c) impossible (d) harder
6. 6.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) string (c) turmeric powder (d) a small paper cup
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) False (b) True
8. 8.True or false: a doorknob is a wheel and axle. (a) True (b) False
9. 9.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
10. 10.⚖️ 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 measure it (b) we change it (c) we keep it the same
11. 11.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) magnet (c) battery (d) rope
12. 12.⚖️ 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
13. 13.🧺 Which of these is not needed for the thread-reel pulley? (a) a balloon (b) a pencil (c) coins as the load (d) string
14. 14.True or false: string is needed for the thread-reel pulley. (a) True (b) False
15. 15.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
16. 16.⚖️ 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 change it (c) we measure it
17. 17.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
18. 18.⚙️ Which of these is a wheel and axle? (a) a crane (b) a see-saw (c) a doorknob (d) a sloping road
19. 19.⚙️ Which of these is a lever? (a) a flagpole (b) a crowbar (c) a ramp (d) a steering wheel
20. 20.⚙️ Which of these is a wheel and axle? (a) a see-saw (b) a steering wheel (c) a spoon lifting a lid (d) a crowbar
21. 21.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) a small paper cup (c) string (d) coins as the load
22. 22.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
23. 23.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
24. 24.⚙️ Which simple machine is a tap handle? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
25. 25.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
26. 26.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
28. 28.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a bottle opener (c) a crane (d) a sloping road
29. 29.⚖️ 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
30. 30.⚙️ Which of these is a lever? (a) a see-saw (b) a sloping road (c) a flagpole (d) a doorknob
31. 31.⚙️ Which of these is a wheel and axle? (a) a crane (b) a sloping road (c) a ramp (d) a tap handle
32. 32.⚙️ Which simple machine is a flagpole? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
33. 33.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a battery cell (c) an empty thread reel (d) turmeric powder
34. 34.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) double (c) the same (d) zero
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the lifting height (b) number of pulleys (c) how hard we must pull (d) the same string
36. 36.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
37. 37.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) a mirror (d) coins as the load
39. 39.⚖️ 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) True (b) False
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) a small paper cup (d) a balloon

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