Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 290 · 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? True or false: number of pulleys is kept the same. (a) True (b) False
2. 2.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) an empty thread reel (c) string (d) coins as the load
3. 3.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
4. 4.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a spoon lifting a lid (c) a well pulley (d) a crowbar
5. 5.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the lifting height (b) number of pulleys (c) the same cup of coins (d) how hard we must pull
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) an empty thread reel (d) a mirror
7. 7.⚙️ Which of these is a wheel and axle? (a) a sloping road (b) a see-saw (c) a crowbar (d) a steering wheel
8. 8.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it might sing (d) it gets hot
9. 9.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the flagpole (c) on the blackboard (d) on the bench
10. 10.⚙️ Which simple machine is a doorknob? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a balloon (c) a small paper cup (d) a pencil
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) string (c) an empty thread reel (d) a small paper cup
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) string (d) a battery cell
14. 14.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
15. 15.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) zero (c) about half (d) double
16. 16.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) turmeric powder (c) yeast (d) coins as the load
17. 17.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a small paper cup (c) a balloon (d) turmeric powder
18. 18.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
19. 19.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 40 cm (c) 5 cm (d) 10 cm
20. 20.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
21. 21.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
22. 22.⚖️ 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 string (c) number of pulleys
23. 23.⚙️ Which of these is a lever? (a) a steering wheel (b) a well pulley (c) a see-saw (d) a slide
24. 24.True or false: a well pulley is a wheel and axle. (a) True (b) False
25. 25.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
26. 26.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) up (c) in a circle (d) down
27. 27.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) yeast (c) a balloon (d) an empty thread reel
28. 28.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) the rope gets shorter (c) the bucket floats (d) pulling down is easier
29. 29.⚖️ 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
30. 30.True or false: a steering wheel uses a pulley. (a) False (b) True
31. 31.⚖️ 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
32. 32.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a spoon lifting a lid (c) a well pulley (d) a sloping road
33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) the same string (c) how hard we must pull (d) the same cup of coins
34. 34.⚙️ Which simple machine is a ramp? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
35. 35.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
36. 36.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
37. 37.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
38. 38.⚙️ Which simple machine is a steering wheel? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
39. 39.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
40. 40.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed

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