Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 363 · 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.⚙️ Which of these uses a pulley? (a) a doorknob (b) a spoon lifting a lid (c) a crane (d) a steering wheel
2. 2.⚙️ Which simple machine is a see-saw? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
3. 3.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
4. 4.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a see-saw (c) a crowbar (d) a flagpole
5. 5.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) about half (d) double
6. 6.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
7. 7.⚖️ 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
8. 8.⚙️ Which simple machine is a sloping road? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
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.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
11. 11.True or false: a flagpole is an inclined plane. (a) False (b) True
12. 12.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) up (c) sideways (d) down
13. 13.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
14. 14.True or false: a tap handle is a wheel and axle. (a) False (b) True
15. 15.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) easier (d) the same
16. 16.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it might sing (c) it could fall on you (d) it gets hot
17. 17.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
18. 18.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) rope (c) battery (d) nail
19. 19.True or false: a see-saw is a wheel and axle. (a) True (b) False
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 measure it (c) we keep it the same
21. 21.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
22. 22.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a spoon lifting a lid (c) a slide (d) a steering wheel
23. 23.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
24. 24.True or false: yeast is needed for the thread-reel pulley. (a) False (b) True
25. 25.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
26. 26.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
27. 27.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a battery cell (c) a magnet (d) a pencil
28. 28.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a slide (c) a sloping road (d) a flagpole
29. 29.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
30. 30.⚙️ Which simple machine is a doorknob? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
31. 31.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a balloon (c) coins as the load (d) string
32. 32.True or false: a well pulley is an inclined plane. (a) True (b) False
33. 33.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets longer (c) it gets wet (d) it can hurt your finger
34. 34.True or false: a steering wheel is a wheel and axle. (a) False (b) True
35. 35.⚖️ 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 measure it (b) we keep it the same (c) we change it
36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.⚖️ 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) how hard we must pull (d) the same cup of coins
38. 38.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
39. 39.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same cup of coins (b) number of pulleys (c) how hard we must pull
40. 40.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed

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