Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 586 · 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.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is the one thing we change. (a) True (b) False
2. 2.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is the one thing we change. (a) True (b) False
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) how hard we must pull (b) the same string (c) the same cup of coins (d) number of pulleys
4. 4.⚖️ 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 keep it the same (c) we change it
5. 5.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
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 lifting height (b) how hard we must pull (c) the same cup of coins (d) number of pulleys
7. 7.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 40 cm (c) 10 cm (d) 20 cm
8. 8.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) False (b) True
9. 9.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it gets wet (c) it can hurt your finger (d) it turns blue
10. 10.⚙️ Which of these is a lever? (a) a steering wheel (b) a tap handle (c) a see-saw (d) a slide
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) a magnet (d) string
12. 12.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it might sing (c) it is magnetic (d) it gets hot
13. 13.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
14. 14.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
15. 15.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a pencil (c) turmeric powder (d) an empty thread reel
16. 16.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) yeast (c) a balloon (d) turmeric powder
17. 17.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
18. 18.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) battery (c) nail (d) rope
19. 19.True or false: a slide is an inclined plane. (a) False (b) True
20. 20.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
21. 21.True or false: a crowbar is a wheel and axle. (a) False (b) True
22. 22.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a bottle opener (c) a doorknob (d) a crane
23. 23.⚙️ Which simple machine is a crowbar? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
24. 24.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) False (b) True
26. 26.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
27. 27.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
28. 28.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) halves the weight (c) makes it magnetic (d) changes pull direction
29. 29.True or false: a ramp is an inclined plane. (a) True (b) False
30. 30.True or false: a slide is a wheel and axle. (a) False (b) True
31. 31.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) easier (c) impossible (d) harder
32. 32.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
33. 33.⚖️ 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) True (b) False
34. 34.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
35. 35.⚙️ Which of these is an inclined plane? (a) a doorknob (b) a crowbar (c) a see-saw (d) a slide
36. 36.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
37. 37.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
38. 38.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) on the flagpole (c) in the tap (d) on the blackboard
39. 39.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) coins as the load (c) a small paper cup (d) a battery cell

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