Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 877 · 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 of these is a lever? (a) a doorknob (b) a crowbar (c) a tap handle (d) a slide
2. 2.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
3. 3.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) string (c) a small paper cup (d) a mirror
4. 4.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
5. 5.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
6. 6.True or false: a tap handle is a wheel and axle. (a) False (b) True
7. 7.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
8. 8.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets wet (c) it turns blue (d) it gets longer
9. 9.True or false: string is needed for the thread-reel pulley. (a) True (b) False
10. 10.⚖️ 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
11. 11.⚖️ 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 keep it the same (c) we change it
12. 12.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
13. 13.⚙️ Which simple machine is a well pulley? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
14. 14.⚖️ 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) False (b) True
15. 15.⚖️ 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) the same cup of coins (c) how hard we must pull (d) number of pulleys
16. 16.🛟 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
17. 17.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) a battery cell (c) a magnet (d) a balloon
18. 18.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) double (c) the same (d) about half
19. 19.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
20. 20.True or false: a crowbar is an inclined plane. (a) False (b) True
21. 21.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) makes it magnetic (c) adds weight (d) changes pull direction
22. 22.⚙️ Which simple machine is a flagpole? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) an empty thread reel (d) a balloon
24. 24.⚙️ Which of these is a lever? (a) a flagpole (b) a see-saw (c) a ramp (d) a well pulley
25. 25.⚖️ 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 lifting height (c) how hard we must pull
26. 26.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) the same (d) easier
27. 27.⚖️ 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
28. 28.⚙️ Which of these is a lever? (a) a steering wheel (b) a tap handle (c) a spoon lifting a lid (d) a doorknob
29. 29.True or false: a ramp uses a pulley. (a) False (b) True
30. 30.⚙️ Which of these is a lever? (a) a well pulley (b) a slide (c) a bottle opener (d) a doorknob
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) a pencil (d) turmeric powder
32. 32.True or false: a doorknob is a lever. (a) False (b) True
33. 33.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) turmeric powder (d) string
34. 34.⚙️ Which simple machine is a crane? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
35. 35.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
36. 36.True or false: a crane is an inclined plane. (a) False (b) True
37. 37.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
38. 38.True or false: a magnet is not needed for the thread-reel pulley. (a) True (b) False
39. 39.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
40. 40.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever

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