Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 618 · 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 see-saw? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
2. 2.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
3. 3.🛟 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
4. 4.⚙️ Which simple machine is a ramp? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
5. 5.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
6. 6.⚖️ 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
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) the same string (c) the same cup of coins (d) how hard we must pull
8. 8.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
9. 9.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 20 cm (c) 40 cm (d) 10 cm
10. 10.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a steering wheel (c) a doorknob (d) a slide
11. 11.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
12. 12.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) an empty thread reel (c) a magnet (d) string
13. 13.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a balloon (c) a small paper cup (d) a mirror
14. 14.⚙️ Which simple machine is a crowbar? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
15. 15.⚙️ Which of these is a wheel and axle? (a) a steering wheel (b) a flagpole (c) a well pulley (d) a sloping road
16. 16.🧺 Which of these is not needed for the thread-reel pulley? (a) yeast (b) string (c) a pencil (d) a small paper cup
17. 17.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
18. 18.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) turmeric powder (c) an empty thread reel (d) a magnet
19. 19.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
20. 20.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a see-saw (c) a spoon lifting a lid (d) a ramp
21. 21.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
22. 22.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) in the tap (c) on the bench (d) on the flagpole
23. 23.⚙️ Which simple machine is a slide? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
24. 24.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it can hurt your finger (d) it turns blue
25. 25.True or false: a see-saw is an inclined plane. (a) False (b) True
26. 26.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) coins as the load (c) a small paper cup (d) an empty thread reel
27. 27.⚙️ Which of these is a lever? (a) a crane (b) a ramp (c) a tap handle (d) a spoon lifting a lid
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is kept the same. (a) False (b) True
29. 29.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
30. 30.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) coins as the load (c) a small paper cup (d) a battery cell
31. 31.⚖️ 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
32. 32.⚙️ Which simple machine is a crane? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
33. 33.⚙️ Which simple machine is a flagpole? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
34. 34.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
35. 35.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) the same (c) easier (d) impossible
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a balloon (c) coins as the load (d) string
37. 37.⚙️ Which of these is a lever? (a) a flagpole (b) a see-saw (c) a doorknob (d) a ramp
38. 38.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
39. 39.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
40. 40.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) magnet (c) battery (d) rope

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