Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 17 · 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 simple machine is a flagpole? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
2. 2.True or false: a sloping road is a lever. (a) False (b) True
3. 3.🏗️ Why is a pulley used to lift water from a deep well? (a) pulling down is easier (b) water gets lighter (c) the bucket floats (d) the rope gets shorter
4. 4.⚙️ Which of these is a lever? (a) a sloping road (b) a ramp (c) a slide (d) a spoon lifting a lid
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.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it can hurt your finger (c) it gets longer (d) it turns blue
7. 7.⚖️ 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
8. 8.True or false: a mirror is not needed for the thread-reel pulley. (a) True (b) False
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) number of pulleys (b) the same cup of coins (c) how hard we must pull
10. 10.⚖️ 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 lifting height (c) the same string (d) how hard we must pull
11. 11.⚙️ Which of these is a lever? (a) a sloping road (b) a slide (c) a see-saw (d) a well pulley
12. 12.True or false: a sloping road is a wheel and axle. (a) False (b) True
13. 13.⚙️ Which of these uses a pulley? (a) a slide (b) a doorknob (c) a ramp (d) a well pulley
14. 14.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) battery (c) magnet (d) nail
15. 15.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a crane (c) a bottle opener (d) a ramp
16. 16.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
17. 17.⚙️ Which simple machine is a crane? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
18. 18.⚖️ 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 measure it (b) we keep it the same (c) we change it
19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) True (b) False
20. 20.⚖️ 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 keep it the same (c) we measure it
21. 21.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
22. 22.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
23. 23.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
24. 24.True or false: a well pulley uses a pulley. (a) False (b) True
25. 25.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
26. 26.🛟 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
27. 27.True or false: a well pulley is an inclined plane. (a) False (b) True
28. 28.⚙️ Which of these is a lever? (a) a flagpole (b) a well pulley (c) a slide (d) a bottle opener
29. 29.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) an empty thread reel (c) turmeric powder (d) a battery cell
30. 30.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) down (c) in a circle (d) up
31. 31.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) on the blackboard (c) in the tap (d) on the flagpole
32. 32.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a magnet (c) turmeric powder (d) coins as the load
33. 33.True or false: a ramp is an inclined plane. (a) False (b) True
34. 34.⚙️ Which simple machine is a sloping road? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
35. 35.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
36. 36.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) adds weight (c) halves the weight (d) changes pull direction
37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) coins as the load (c) a small paper cup (d) a balloon
38. 38.🔮 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
39. 39.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) a pencil (c) an empty thread reel (d) coins as the load
40. 40.True or false: string is not needed for the thread-reel pulley. (a) False (b) True

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