Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 466 · 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 flagpole is a lever. (a) False (b) True
2. 2.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) a small paper cup (c) a pencil (d) string
3. 3.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) yeast (c) string (d) a balloon
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) a mirror (d) coins as the load
6. 6.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) string (c) yeast (d) a small paper cup
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) an empty thread reel (c) string (d) a magnet
9. 9.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
10. 10.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
11. 11.True or false: a doorknob is a wheel and axle. (a) True (b) False
12. 12.⚖️ 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 measure it (c) we keep it the same
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) turmeric powder (c) coins as the load (d) a pencil
14. 14.True or false: a bottle opener is a lever. (a) False (b) True
15. 15.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it could fall on you (d) it is magnetic
16. 16.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
17. 17.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it gets wet (d) it can hurt your finger
18. 18.⚖️ 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) the same string (c) how hard we must pull
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) yeast (c) coins as the load (d) an empty thread reel
20. 20.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a battery cell (c) string (d) an empty thread reel
22. 22.⚙️ Which of these is an inclined plane? (a) a ramp (b) a well pulley (c) a bottle opener (d) a steering wheel
23. 23.True or false: string is needed for the thread-reel pulley. (a) True (b) False
24. 24.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
25. 25.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) double (c) the same (d) about half
26. 26.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) True (b) False
28. 28.⚖️ 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 lifting height
29. 29.True or false: a steering wheel uses a pulley. (a) False (b) True
30. 30.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
31. 31.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a flagpole (c) a slide (d) a doorknob
32. 32.⚖️ 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) False (b) True
33. 33.True or false: a doorknob is an inclined plane. (a) True (b) False
34. 34.⚙️ Which simple machine is a flagpole? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
35. 35.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 5 cm (c) 20 cm (d) 40 cm
36. 36.⚙️ Which of these is a wheel and axle? (a) a steering wheel (b) a well pulley (c) a ramp (d) a flagpole
37. 37.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
38. 38.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
39. 39.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) False (b) True

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