Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 458 · 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 doorknob is an inclined plane. (a) True (b) False
2. 2.⚙️ Which of these uses a pulley? (a) a see-saw (b) a tap handle (c) a flagpole (d) a slide
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) a small paper cup (d) a battery cell
4. 4.⚙️ Which simple machine is a spoon lifting a lid? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
5. 5.True or false: a crane uses a pulley. (a) True (b) False
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) a magnet (d) an empty thread reel
7. 7.True or false: a spoon lifting a lid is a wheel and axle. (a) False (b) True
8. 8.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it could fall on you (d) it is magnetic
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is the one thing we change. (a) False (b) True
10. 10.True or false: a see-saw is a lever. (a) True (b) False
11. 11.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
12. 12.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
13. 13.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) sideways (c) in a circle (d) down
14. 14.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
15. 15.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a see-saw (c) a well pulley (d) a bottle opener
16. 16.⚙️ Which of these is a lever? (a) a crane (b) a bottle opener (c) a sloping road (d) a ramp
17. 17.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a battery cell (c) yeast (d) an empty thread reel
18. 18.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 10 cm (c) 40 cm (d) 5 cm
19. 19.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
20. 20.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
21. 21.⚖️ 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 measure it (b) we change it (c) we keep it the same
22. 22.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) pulling down is easier (c) the bucket floats (d) the rope gets shorter
23. 23.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
24. 24.⚙️ Which simple machine is a doorknob? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
25. 25.⚙️ Which of these uses a pulley? (a) a crane (b) a spoon lifting a lid (c) a steering wheel (d) a tap handle
26. 26.⚖️ 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) the same string (c) number of pulleys (d) how hard we must pull
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) an empty thread reel (c) string (d) a balloon
28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) a balloon (d) an empty thread reel
29. 29.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
30. 30.True or false: string is needed for the thread-reel pulley. (a) True (b) False
31. 31.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we keep it the same (c) we measure it
32. 32.⚖️ 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 cup of coins (c) number of pulleys (d) the lifting height
33. 33.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
34. 34.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
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.True or false: a spoon lifting a lid uses a pulley. (a) False (b) True
37. 37.⚖️ 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 measure it (b) we keep it the same (c) we change it
38. 38.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
39. 39.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) nail (c) rope (d) battery
40. 40.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) coins as the load (c) yeast (d) an empty thread reel

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