Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 504 · 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 needed for the thread-reel pulley? (a) string (b) a magnet (c) yeast (d) a mirror
2. 2.⚖️ 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 change it (b) we measure it (c) we keep it the same
3. 3.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
4. 4.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a spoon lifting a lid (c) a crowbar (d) a steering wheel
5. 5.⚙️ Which simple machine is a spoon lifting a lid? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
6. 6.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
7. 7.⚙️ Which simple machine is a see-saw? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
8. 8.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) battery (c) magnet (d) rope
9. 9.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
10. 10.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) the same (c) harder (d) easier
11. 11.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True
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 cup of coins (b) the lifting height (c) number of pulleys (d) the same string
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) an empty thread reel (c) a pencil (d) a small paper cup
14. 14.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it could fall on you (d) it might sing
15. 15.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 20 cm (c) 5 cm (d) 40 cm
16. 16.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a steering wheel (c) a ramp (d) a bottle opener
17. 17.⚙️ Which simple machine is a crane? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
18. 18.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is the one thing we change. (a) True (b) False
19. 19.⚙️ Which of these is a lever? (a) a well pulley (b) a ramp (c) a see-saw (d) a tap handle
20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) an empty thread reel (c) a mirror (d) a balloon
21. 21.🧺 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) a mirror
22. 22.⚖️ 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
23. 23.⚖️ 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) True (b) False
24. 24.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
25. 25.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
26. 26.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) False (b) True
28. 28.True or false: a crowbar is a lever. (a) False (b) True
29. 29.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it turns blue (c) it can hurt your finger (d) it gets longer
30. 30.⚖️ 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
31. 31.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
32. 32.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we keep it the same (c) we measure it
34. 34.True or false: a see-saw is a lever. (a) False (b) True
35. 35.⚖️ 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
36. 36.⚖️ 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 change it (c) we measure it
37. 37.🧺 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 balloon (d) coins as the load
38. 38.True or false: string is needed for the thread-reel pulley. (a) False (b) True
39. 39.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
40. 40.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True

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