Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 47 · 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.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) impossible (c) harder (d) the same
2. 2.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
3. 3.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
4. 4.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) an empty thread reel (c) a small paper cup (d) string
6. 6.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
7. 7.⚙️ Which of these is a lever? (a) a slide (b) a ramp (c) a sloping road (d) a crowbar
8. 8.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
9. 9.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
10. 10.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a doorknob (c) a sloping road (d) a crowbar
11. 11.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) a balloon (d) string
13. 13.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it can hurt your finger (c) it gets longer (d) it gets wet
14. 14.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a mirror (c) a pencil (d) a magnet
15. 15.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a magnet (c) a pencil (d) a small paper cup
16. 16.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a slide (c) a bottle opener (d) a flagpole
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) turmeric powder (c) an empty thread reel (d) string
18. 18.⚖️ 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) True (b) False
19. 19.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it could fall on you (c) it gets hot (d) it is magnetic
20. 20.⚖️ 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 keep it the same (b) we change it (c) we measure it
21. 21.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
22. 22.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a see-saw (c) a crowbar (d) a well pulley
23. 23.⚖️ 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
24. 24.⚖️ 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 lifting height (c) number of pulleys
25. 25.⚖️ 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 cup of coins (b) the same string (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) string (b) a small paper cup (c) a pencil (d) yeast
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same string (b) how hard we must pull (c) the same cup of coins (d) the lifting height
28. 28.⚖️ 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
29. 29.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
30. 30.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
31. 31.⚙️ Which simple machine is a see-saw? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
32. 32.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) rope (d) magnet
33. 33.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
34. 34.True or false: a steering wheel is a wheel and axle. (a) False (b) True
35. 35.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
36. 36.⚙️ Which of these is a lever? (a) a flagpole (b) a doorknob (c) a spoon lifting a lid (d) a sloping road
37. 37.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 5 cm (c) 10 cm (d) 40 cm
38. 38.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
39. 39.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) True (b) False
40. 40.True or false: a sloping road is an inclined plane. (a) False (b) True

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