Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 493 · 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.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) yeast (d) string
2. 2.⚖️ 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 change it (b) we keep it the same (c) we measure it
3. 3.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets wet (c) it gets longer (d) it can hurt your finger
4. 4.⚖️ 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 cup of coins (c) how hard we must pull (d) number of pulleys
5. 5.⚖️ 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) False (b) True
6. 6.True or false: a see-saw is a wheel and axle. (a) False (b) True
7. 7.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 20 cm (c) 10 cm (d) 5 cm
8. 8.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) the same (c) impossible (d) harder
9. 9.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it might sing (d) it could fall on you
10. 10.True or false: a tap handle is a wheel and axle. (a) False (b) True
11. 11.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) coins as the load (c) an empty thread reel (d) string
12. 12.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
13. 13.True or false: a ramp uses a pulley. (a) True (b) False
14. 14.⚖️ 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
15. 15.⚙️ Which of these is a lever? (a) a crowbar (b) a slide (c) a ramp (d) a flagpole
16. 16.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
17. 17.⚖️ 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 measure it (c) we change it
18. 18.⚙️ Which of these is a lever? (a) a ramp (b) a see-saw (c) a flagpole (d) a steering wheel
19. 19.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
20. 20.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
21. 21.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
22. 22.⚖️ 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
23. 23.⚙️ Which simple machine is a doorknob? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a magnet (c) a small paper cup (d) a mirror
25. 25.True or false: a crane is an inclined plane. (a) True (b) False
26. 26.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) turmeric powder (c) string (d) an empty thread reel
27. 27.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) a battery cell (c) a mirror (d) yeast
28. 28.⚖️ 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) the lifting height (c) number of pulleys
29. 29.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the bench (c) on the flagpole (d) in the tap
30. 30.⚙️ Which simple machine is a well pulley? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
31. 31.True or false: a well pulley uses a pulley. (a) True (b) False
32. 32.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a ramp (c) a well pulley (d) a doorknob
33. 33.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
34. 34.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a slide (c) a spoon lifting a lid (d) a flagpole
35. 35.True or false: a steering wheel is a wheel and axle. (a) True (b) False
36. 36.True or false: a bottle opener is a lever. (a) False (b) True
37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) yeast (b) a pencil (c) string (d) an empty thread reel
38. 38.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
39. 39.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) changes pull direction (c) halves the weight (d) makes it magnetic
40. 40.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) in a circle (c) sideways (d) down

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