Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 583 · 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.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) turmeric powder (d) coins as the load
2. 2.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) rope (c) nail (d) battery
3. 3.⚙️ Which simple machine is a well pulley? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
4. 4.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
5. 5.True or false: a bottle opener uses a pulley. (a) True (b) False
6. 6.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) a small paper cup (c) an empty thread reel (d) a pencil
7. 7.True or false: a sloping road is a lever. (a) False (b) True
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) the same string (b) number of pulleys (c) the same cup of coins (d) the lifting height
9. 9.⚖️ 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
10. 10.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
11. 11.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) in a circle (c) sideways (d) down
12. 12.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) about half (c) double (d) the same
13. 13.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it might sing (c) it is magnetic (d) it could fall on you
14. 14.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
15. 15.⚙️ Which simple machine is a slide? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
16. 16.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
17. 17.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) easier (c) the same (d) impossible
18. 18.⚖️ 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 change it (b) we measure it (c) we keep it the same
19. 19.⚖️ 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
20. 20.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
21. 21.True or false: yeast is needed for the thread-reel pulley. (a) False (b) True
22. 22.⚖️ 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
23. 23.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a mirror (c) an empty thread reel (d) coins as the load
25. 25.⚙️ Which simple machine is a tap handle? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
26. 26.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) a magnet (d) coins as the load
27. 27.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
28. 28.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) turmeric powder (c) string (d) a magnet
29. 29.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) yeast (c) a small paper cup (d) turmeric powder
30. 30.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a see-saw (c) a steering wheel (d) a spoon lifting a lid
31. 31.⚙️ Which of these is a lever? (a) a doorknob (b) a steering wheel (c) a see-saw (d) a flagpole
32. 32.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the bench (c) on the flagpole (d) in the tap
33. 33.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) yeast (d) a small paper cup
34. 34.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
35. 35.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a steering wheel (c) a flagpole (d) a ramp
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: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
38. 38.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it turns blue (c) it gets wet (d) it gets longer
39. 39.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a balloon (c) a pencil (d) coins as the load
40. 40.True or false: a steering wheel is an inclined plane. (a) True (b) False

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