Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 217 · 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.⚖️ 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 change it (b) we measure it (c) we keep it the same
2. 2.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
3. 3.True or false: a tap handle is a wheel and axle. (a) True (b) False
4. 4.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it could fall on you (c) it gets hot (d) it is magnetic
5. 5.True or false: a sloping road is an inclined plane. (a) True (b) False
6. 6.True or false: a spoon lifting a lid is a lever. (a) False (b) True
7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) string (c) a pencil (d) an empty thread reel
8. 8.⚖️ 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
9. 9.⚖️ 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 keep it the same (c) we measure it
10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) turmeric powder (d) a pencil
12. 12.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) an empty thread reel (d) a balloon
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) True (b) False
14. 14.⚙️ Which simple machine is a flagpole? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
15. 15.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
16. 16.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
17. 17.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) True (b) False
18. 18.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
19. 19.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
20. 20.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) a balloon (d) coins as the load
22. 22.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it can hurt your finger (c) it turns blue (d) it gets wet
23. 23.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
24. 24.⚖️ 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 measure it (c) we keep it the same
25. 25.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
26. 26.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
27. 27.⚖️ 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
28. 28.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) easier (d) impossible
29. 29.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
30. 30.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) double (c) zero (d) about half
31. 31.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) False (b) True
33. 33.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) coins as the load (d) a battery cell
34. 34.⚙️ Which of these uses a pulley? (a) a ramp (b) a crane (c) a see-saw (d) a slide
35. 35.True or false: a crowbar uses a pulley. (a) False (b) True
36. 36.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
37. 37.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) yeast (c) a small paper cup (d) coins as the load
38. 38.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
39. 39.True or false: a see-saw is a wheel and axle. (a) True (b) False
40. 40.⚙️ Which of these is an inclined plane? (a) a doorknob (b) a well pulley (c) a ramp (d) a steering wheel

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