Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 71 · 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) down (b) in a circle (c) up (d) sideways
2. 2.True or false: a slide is an inclined plane. (a) True (b) False
3. 3.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
4. 4.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) coins as the load (c) an empty thread reel (d) a magnet
5. 5.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same string (b) number of pulleys (c) the lifting height (d) how hard we must pull
6. 6.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
7. 7.🛟 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
8. 8.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) True (b) False
9. 9.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a well pulley (c) a crowbar (d) a doorknob
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) string (d) turmeric powder
11. 11.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
12. 12.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
13. 13.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a crowbar (c) a spoon lifting a lid (d) a flagpole
14. 14.⚙️ Which of these is an inclined plane? (a) a crane (b) a ramp (c) a crowbar (d) a steering wheel
15. 15.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
16. 16.⚖️ 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 keep it the same (b) we change it (c) we measure it
17. 17.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
18. 18.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a mirror (c) a pencil (d) an empty thread reel
19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) number of pulleys (c) the same cup of coins
20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.⚖️ 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 change it (c) we measure it
22. 22.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it can hurt your finger (c) it gets wet (d) it gets longer
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) a magnet (d) string
24. 24.True or false: a see-saw is a wheel and axle. (a) True (b) False
25. 25.⚖️ 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) number of pulleys (d) how hard we must pull
26. 26.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the flagpole (c) on the bench (d) in the tap
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a small paper cup (c) yeast (d) a pencil
28. 28.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
29. 29.True or false: string is needed for the thread-reel pulley. (a) True (b) False
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.True or false: a sloping road uses a pulley. (a) True (b) False
32. 32.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) a balloon (d) an empty thread reel
33. 33.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a slide (c) a crane (d) a steering wheel
34. 34.True or false: coins as the load is needed for the thread-reel pulley. (a) False (b) True
35. 35.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) magnet (c) battery (d) rope
36. 36.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) a magnet (c) yeast (d) a balloon
37. 37.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
38. 38.⚙️ Which simple machine is a steering wheel? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
39. 39.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) a balloon (c) turmeric powder (d) a mirror
40. 40.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False

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