Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 274 · 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 crane (b) a see-saw (c) a flagpole (d) a steering wheel
2. 2.⚙️ Which simple machine is a sloping road? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
3. 3.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
4. 4.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
5. 5.⚖️ 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
6. 6.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) coins as the load (c) a magnet (d) a small paper cup
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) True (b) False
8. 8.⚖️ 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
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) yeast (b) a pencil (c) string (d) an empty thread reel
10. 10.⚖️ 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 measure it (c) we keep it the same
11. 11.⚙️ Which of these is a lever? (a) a tap handle (b) a spoon lifting a lid (c) a flagpole (d) a slide
12. 12.⚖️ 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
13. 13.🛟 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
14. 14.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
15. 15.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
16. 16.True or false: yeast is needed for the thread-reel pulley. (a) False (b) True
17. 17.True or false: a well pulley uses a pulley. (a) True (b) False
18. 18.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) a small paper cup (d) a magnet
19. 19.True or false: a flagpole uses a pulley. (a) True (b) False
20. 20.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) coins as the load (c) an empty thread reel (d) a small paper cup
21. 21.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
22. 22.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
23. 23.True or false: string is needed for the thread-reel pulley. (a) False (b) True
24. 24.True or false: a magnet is not needed for the thread-reel pulley. (a) True (b) False
25. 25.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) easier (d) harder
26. 26.⚙️ Which of these uses a pulley? (a) a tap handle (b) a flagpole (c) a slide (d) a spoon lifting a lid
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) coins as the load (c) an empty thread reel (d) string
29. 29.True or false: a ramp is an inclined plane. (a) False (b) True
30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) a mirror (d) an empty thread reel
31. 31.⚙️ Which simple machine is a steering wheel? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
32. 32.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
33. 33.⚙️ Which simple machine is a slide? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
34. 34.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) battery (c) magnet (d) rope
35. 35.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
36. 36.⚖️ 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
37. 37.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 5 cm (c) 20 cm (d) 10 cm
38. 38.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
39. 39.🛟 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
40. 40.⚖️ 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) how hard we must pull (c) the lifting height (d) the same string

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