Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 663 · 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.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it can hurt your finger (d) it gets wet
2. 2.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) yeast (d) coins as the load
4. 4.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
5. 5.⚙️ Which of these uses a pulley? (a) a well pulley (b) a sloping road (c) a slide (d) a crowbar
6. 6.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a balloon (c) yeast (d) turmeric powder
7. 7.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it might sing (c) it could fall on you (d) it is magnetic
8. 8.True or false: a well pulley is a lever. (a) True (b) False
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) True (b) False
10. 10.⚙️ Which of these uses a pulley? (a) a tap handle (b) a flagpole (c) a slide (d) a crowbar
11. 11.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) double (c) zero (d) about half
12. 12.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the same string (b) the lifting height (c) how hard we must pull (d) number of pulleys
13. 13.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) False (b) True
15. 15.True or false: yeast is needed for the thread-reel pulley. (a) False (b) True
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) coins as the load (c) string (d) a magnet
17. 17.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
18. 18.⚙️ Which simple machine is a bottle opener? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
19. 19.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
20. 20.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the lifting height (b) how hard we must pull (c) number of pulleys
22. 22.⚖️ 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 change it (c) we keep it the same
23. 23.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a flagpole (c) a tap handle (d) a ramp
24. 24.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) coins as the load (c) a pencil (d) turmeric powder
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) the lifting height (c) how hard we must pull (d) number of pulleys
26. 26.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) coins as the load (c) string (d) a small paper cup
27. 27.⚙️ Which of these is an inclined plane? (a) a slide (b) a crane (c) a doorknob (d) a flagpole
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.⚙️ Which of these is a lever? (a) a sloping road (b) a bottle opener (c) a ramp (d) a well pulley
30. 30.True or false: a spoon lifting a lid is a lever. (a) False (b) True
31. 31.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
32. 32.🧺 Which of these is not needed for the thread-reel pulley? (a) a battery cell (b) a small paper cup (c) string (d) a pencil
33. 33.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a balloon (c) an empty thread reel (d) a pencil
34. 34.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) makes it magnetic (c) adds weight (d) halves the weight
35. 35.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) yeast (c) string (d) coins as the load
36. 36.True or false: a steering wheel is a wheel and axle. (a) False (b) True
37. 37.True or false: a bottle opener is a wheel and axle. (a) True (b) False
38. 38.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) magnet (d) rope
39. 39.True or false: a crane uses a pulley. (a) False (b) True
40. 40.⚖️ 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

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