Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 678 · 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 an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
2. 2.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) battery (c) rope (d) magnet
3. 3.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets wet (c) it can hurt your finger (d) it gets longer
4. 4.⚖️ 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
5. 5.⚙️ Which of these uses a pulley? (a) a crowbar (b) a flagpole (c) a tap handle (d) a sloping road
6. 6.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
7. 7.⚖️ 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
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) string (c) an empty thread reel (d) a pencil
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a balloon (c) a pencil (d) string
10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True
11. 11.⚖️ 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
12. 12.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
13. 13.⚖️ 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
14. 14.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
15. 15.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) easier (d) impossible
16. 16.True or false: string is needed for the thread-reel pulley. (a) True (b) False
17. 17.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
18. 18.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
19. 19.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
20. 20.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) coins as the load (d) a balloon
21. 21.⚖️ 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 same string
22. 22.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
23. 23.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) yeast (c) a pencil (d) coins as the load
24. 24.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) about half (d) zero
25. 25.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a small paper cup (c) yeast (d) a balloon
26. 26.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
27. 27.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
28. 28.🧺 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) yeast
29. 29.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a mirror (c) a pencil (d) a small paper cup
30. 30.True or false: a ramp uses a pulley. (a) False (b) True
31. 31.⚙️ Which simple machine is a flagpole? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
32. 32.⚙️ Which of these is a lever? (a) a sloping road (b) a well pulley (c) a crowbar (d) a crane
33. 33.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a crane (c) a tap handle (d) a well pulley
34. 34.⚙️ Which of these is a wheel and axle? (a) a crane (b) a steering wheel (c) a see-saw (d) a flagpole
35. 35.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) string (c) a mirror (d) an empty thread reel
36. 36.🛟 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
37. 37.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a crowbar (c) a crane (d) a spoon lifting a lid
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) a small paper cup (c) a pencil (d) an empty thread reel
39. 39.True or false: a sloping road uses a pulley. (a) False (b) True
40. 40.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False

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