Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 564 · 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 pencil is not needed for the thread-reel pulley. (a) True (b) False
2. 2.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
3. 3.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it is magnetic (d) it could fall on you
4. 4.True or false: a flagpole uses a pulley. (a) False (b) True
5. 5.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) harder (d) easier
6. 6.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) string (c) a battery cell (d) an empty thread reel
7. 7.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a tap handle (c) a flagpole (d) a crowbar
8. 8.⚖️ 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
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) True (b) False
10. 10.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) rope (d) magnet
11. 11.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
12. 12.🧺 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
13. 13.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it gets wet (c) it can hurt your finger (d) it turns blue
14. 14.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
15. 15.🧺 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 balloon
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) an empty thread reel (c) coins as the load (d) a small paper cup
17. 17.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) about half (d) double
18. 18.⚖️ 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) how hard we must pull (c) number of pulleys (d) the same string
19. 19.⚖️ 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
20. 20.⚖️ 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
21. 21.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) halves the weight (c) adds weight (d) makes it magnetic
22. 22.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
23. 23.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a mirror (c) a small paper cup (d) a battery cell
24. 24.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
25. 25.True or false: a magnet is not needed for the thread-reel pulley. (a) True (b) False
26. 26.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a slide (c) a crane (d) a flagpole
27. 27.⚙️ Which simple machine is a flagpole? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) turmeric powder (d) string
29. 29.⚙️ Which of these uses a pulley? (a) a flagpole (b) a ramp (c) a bottle opener (d) a crowbar
30. 30.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
31. 31.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
32. 32.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
33. 33.⚖️ 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 lifting height (c) number of pulleys (d) the same string
34. 34.⚙️ Which simple machine is a bottle opener? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
35. 35.True or false: a tap handle uses a pulley. (a) True (b) False
36. 36.⚙️ Which simple machine is a tap handle? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
37. 37.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
38. 38.True or false: a well pulley uses a pulley. (a) True (b) False
39. 39.⚖️ 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) the same cup of coins (c) number of pulleys
40. 40.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) on the blackboard (c) on the flagpole (d) in the tap

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