Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 710 · 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.🏗️ 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
2. 2.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) True (b) False
3. 3.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
4. 4.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
5. 5.⚙️ Which of these uses a pulley? (a) a flagpole (b) a steering wheel (c) a crowbar (d) a spoon lifting a lid
6. 6.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a crane (c) a spoon lifting a lid (d) a see-saw
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we keep it the same (b) we change it (c) we measure it
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) a small paper cup (d) a magnet
9. 9.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it turns blue (d) it can hurt your finger
10. 10.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) makes it magnetic (c) adds weight (d) halves the weight
11. 11.True or false: a spoon lifting a lid is an inclined plane. (a) False (b) True
12. 12.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
13. 13.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a small paper cup (c) coins as the load (d) a battery cell
14. 14.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) coins as the load (c) a balloon (d) a battery cell
15. 15.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) double (c) zero (d) the same
16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.⚖️ 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) the same string (c) how hard we must pull (d) number of pulleys
18. 18.True or false: a crane is an inclined plane. (a) True (b) False
19. 19.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it could fall on you (d) it gets hot
20. 20.⚙️ Which simple machine is a steering wheel? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
21. 21.True or false: a battery cell is not 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 “the lifting height”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a tap handle (c) a crane (d) a slide
24. 24.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
25. 25.🇮🇳 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
26. 26.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) a mirror (d) coins as the load
28. 28.⚙️ Which of these is an inclined plane? (a) a doorknob (b) a well pulley (c) a sloping road (d) a spoon lifting a lid
29. 29.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 10 cm (c) 40 cm (d) 5 cm
30. 30.True or false: a bottle opener is a wheel and axle. (a) True (b) False
31. 31.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) rope (c) magnet (d) nail
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) True (b) False
33. 33.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) string (c) turmeric powder (d) a magnet
34. 34.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
35. 35.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) an empty thread reel (d) a battery cell
37. 37.⚖️ 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) number of pulleys (c) how hard we must pull
38. 38.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
39. 39.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
40. 40.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a crane (c) a crowbar (d) a steering wheel

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