Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 765 · 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.True or false: a sloping road is an inclined plane. (a) True (b) False
2. 2.⚖️ 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
3. 3.True or false: a flagpole uses a pulley. (a) True (b) False
4. 4.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
5. 5.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) easier (c) the same (d) impossible
6. 6.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a mirror (c) an empty thread reel (d) a small paper cup
8. 8.⚖️ 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 measure it (c) we change it
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) the same cup of coins (c) the same string (d) the lifting height
10. 10.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a steering wheel (c) a slide (d) a spoon lifting a lid
11. 11.⚖️ 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) number of pulleys (c) the lifting height
12. 12.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) down (c) up (d) sideways
13. 13.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
14. 14.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
15. 15.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a balloon (c) a pencil (d) an empty thread reel
17. 17.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) how hard we must pull (b) the same cup of coins (c) the lifting height (d) the same string
18. 18.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) string (c) a pencil (d) coins as the load
19. 19.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
20. 20.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets longer (c) it gets wet (d) it can hurt your finger
21. 21.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it might sing (d) it could fall on you
22. 22.True or false: a crowbar is a lever. (a) False (b) True
23. 23.⚖️ 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
24. 24.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
25. 25.⚙️ Which of these is a lever? (a) a doorknob (b) a spoon lifting a lid (c) a flagpole (d) a ramp
26. 26.⚙️ Which of these is an inclined plane? (a) a doorknob (b) a spoon lifting a lid (c) a steering wheel (d) a sloping road
27. 27.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
28. 28.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
29. 29.⚖️ 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
30. 30.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) an empty thread reel (c) a balloon (d) a magnet
31. 31.⚖️ 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
32. 32.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) magnet (c) nail (d) battery
33. 33.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
34. 34.⚙️ Which of these uses a pulley? (a) a sloping road (b) a crowbar (c) a flagpole (d) a slide
35. 35.⚙️ Which simple machine is a steering wheel? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same cup of coins (b) number of pulleys (c) how hard we must pull
37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a pencil (c) an empty thread reel (d) turmeric powder
38. 38.True or false: string is not 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 string is kept the same. (a) True (b) False
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) yeast (d) coins as the load

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