Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 114 · 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 bottle opener is a lever. (a) True (b) False
2. 2.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 20 cm (c) 40 cm (d) 5 cm
3. 3.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) rope (c) magnet (d) battery
4. 4.🏗️ 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
5. 5.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
6. 6.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a crowbar (c) a sloping road (d) a crane
7. 7.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
8. 8.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) True (b) False
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a small paper cup (c) string (d) yeast
11. 11.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
12. 12.⚙️ Which of these is a wheel and axle? (a) a sloping road (b) a spoon lifting a lid (c) a tap handle (d) a see-saw
13. 13.⚖️ 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
14. 14.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
15. 15.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
16. 16.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) double (c) zero (d) about half
17. 17.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a crane (c) a ramp (d) a sloping road
18. 18.⚖️ 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 change it (c) we keep it the same
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) a pencil (c) a small paper cup (d) coins as the load
20. 20.⚙️ Which simple machine is a well pulley? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
21. 21.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
22. 22.⚖️ 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) how hard we must pull (d) the lifting height
23. 23.⚙️ Which of these is a lever? (a) a steering wheel (b) a slide (c) a spoon lifting a lid (d) a flagpole
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a mirror (c) turmeric powder (d) coins as the load
25. 25.⚙️ Which of these is a lever? (a) a crowbar (b) a doorknob (c) a sloping road (d) a flagpole
26. 26.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is what we measure. (a) True (b) False
27. 27.⚖️ 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
28. 28.⚖️ 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) True (b) False
29. 29.True or false: a slide is an inclined plane. (a) True (b) False
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) the same cup of coins (c) how hard we must pull (d) the lifting height
31. 31.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) an empty thread reel (d) a battery cell
32. 32.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) easier (d) the same
33. 33.⚖️ 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
34. 34.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
35. 35.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) a small paper cup (c) a pencil (d) coins as the load
37. 37.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it gets hot (d) it could fall on you
38. 38.True or false: a crane uses a pulley. (a) True (b) False
39. 39.True or false: a magnet is not needed for the thread-reel pulley. (a) True (b) False
40. 40.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a balloon (c) an empty thread reel (d) a battery cell

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