Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 830 · 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.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
2. 2.True or false: a crane is an inclined plane. (a) False (b) True
3. 3.🏗️ 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
4. 4.⚖️ 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
5. 5.⚙️ Which of these uses a pulley? (a) a crowbar (b) a bottle opener (c) a well pulley (d) a steering wheel
6. 6.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
7. 7.⚙️ Which simple machine is a see-saw? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
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 same cup of coins
9. 9.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
10. 10.⚙️ Which of these uses a pulley? (a) a tap handle (b) a crane (c) a steering wheel (d) a slide
11. 11.True or false: a sloping road is a wheel and axle. (a) False (b) True
12. 12.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
13. 13.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
14. 14.⚖️ 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) False (b) True
15. 15.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it could fall on you (d) it gets hot
16. 16.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 10 cm (c) 5 cm (d) 40 cm
17. 17.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) a small paper cup (d) a balloon
18. 18.⚙️ Which of these is a lever? (a) a crane (b) a spoon lifting a lid (c) a well pulley (d) a doorknob
19. 19.True or false: a see-saw uses a pulley. (a) True (b) False
20. 20.⚖️ 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
21. 21.⚙️ Which of these uses a pulley? (a) a sloping road (b) a see-saw (c) a doorknob (d) a flagpole
22. 22.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
23. 23.⚙️ Which of these is a lever? (a) a ramp (b) a well pulley (c) a slide (d) a see-saw
24. 24.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
25. 25.True or false: a ramp is an inclined plane. (a) True (b) False
26. 26.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
27. 27.⚖️ 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 same string
28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a battery cell (c) a pencil (d) a small paper cup
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) turmeric powder (c) a balloon (d) a battery cell
32. 32.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
33. 33.🧺 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
34. 34.⚖️ 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
35. 35.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets longer (c) it gets wet (d) it turns blue
36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) how hard we must pull (b) the same string (c) the lifting height (d) number of pulleys
37. 37.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) turmeric powder (c) a balloon (d) a magnet
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) string (c) a small paper cup (d) coins as the load
39. 39.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
40. 40.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a well pulley (c) a spoon lifting a lid (d) a slide

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