Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 350 · 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.🛟 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
2. 2.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a mirror (c) a battery cell (d) a pencil
3. 3.⚙️ Which simple machine is a see-saw? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
4. 4.⚖️ 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) False (b) True
5. 5.⚙️ Which simple machine is a slide? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) an empty thread reel (c) coins as the load (d) a pencil
7. 7.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) zero (c) the same (d) double
8. 8.⚙️ Which of these is a lever? (a) a bottle opener (b) a flagpole (c) a ramp (d) a crane
9. 9.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
10. 10.🛟 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
11. 11.⚙️ Which of these is a lever? (a) a see-saw (b) a ramp (c) a well pulley (d) a slide
12. 12.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) a magnet (d) coins as the load
14. 14.⚙️ Which of these is a wheel and axle? (a) a slide (b) a steering wheel (c) a crowbar (d) a see-saw
15. 15.True or false: a ramp is an inclined plane. (a) False (b) True
16. 16.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
17. 17.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a mirror (c) turmeric powder (d) coins as the load
18. 18.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
19. 19.⚖️ 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
20. 20.⚖️ 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
21. 21.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) string (c) coins as the load (d) a mirror
22. 22.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) sideways (c) up (d) in a circle
23. 23.⚙️ Which of these is an inclined plane? (a) a slide (b) a crowbar (c) a flagpole (d) a well pulley
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a balloon (c) a mirror (d) an empty thread reel
25. 25.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) adds weight (c) makes it magnetic (d) changes pull direction
26. 26.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
27. 27.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) battery (c) rope (d) nail
28. 28.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a crane (c) a bottle opener (d) a tap handle
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same string (b) how hard we must pull (c) number of pulleys
31. 31.⚖️ 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) the lifting height (d) how hard we must pull
32. 32.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the flagpole (c) on the bench (d) on the blackboard
33. 33.True or false: a tap handle is a lever. (a) True (b) False
34. 34.⚙️ Which simple machine is a ramp? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
35. 35.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
36. 36.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
37. 37.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) string (c) a mirror (d) a battery cell
38. 38.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a magnet (c) coins as the load (d) a small paper cup
39. 39.True or false: a tap handle is a wheel and axle. (a) True (b) False
40. 40.True or false: a flagpole uses a pulley. (a) False (b) True

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