Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 804 · 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.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
2. 2.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) up (c) down (d) in a circle
3. 3.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a battery cell (c) an empty thread reel (d) string
4. 4.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) a battery cell (d) coins as the load
6. 6.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) True (b) False
7. 7.⚖️ 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 cup of coins (b) the lifting height (c) the same string (d) number of pulleys
8. 8.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) a mirror (d) a small paper cup
9. 9.True or false: a crowbar is a lever. (a) True (b) False
10. 10.⚖️ 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 cup of coins (c) the lifting height (d) the same string
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) a mirror (d) string
12. 12.⚖️ 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
13. 13.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
14. 14.True or false: a spoon lifting a lid is a lever. (a) False (b) True
15. 15.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it might sing (d) it gets hot
16. 16.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) in the tap (c) on the flagpole (d) on the blackboard
17. 17.⚖️ 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
18. 18.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
19. 19.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) nail (c) battery (d) rope
20. 20.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a balloon (c) an empty thread reel (d) string
21. 21.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
22. 22.⚙️ Which simple machine is a slide? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a small paper cup (c) a magnet (d) a pencil
24. 24.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
25. 25.⚖️ 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 lifting height (c) how hard we must pull
26. 26.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) a small paper cup (c) string (d) a pencil
27. 27.⚙️ Which of these is a wheel and axle? (a) a sloping road (b) a doorknob (c) a ramp (d) a slide
28. 28.True or false: a spoon lifting a lid is a wheel and axle. (a) False (b) True
29. 29.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
30. 30.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) a magnet (c) yeast (d) turmeric powder
31. 31.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it can hurt your finger (c) it gets longer (d) it gets wet
32. 32.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 5 cm (c) 40 cm (d) 20 cm
33. 33.⚙️ Which simple machine is a doorknob? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
34. 34.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
35. 35.⚖️ 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) True (b) False
36. 36.⚙️ Which of these is a lever? (a) a steering wheel (b) a doorknob (c) a crowbar (d) a sloping road
37. 37.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) the bucket floats (c) the rope gets shorter (d) pulling down is easier
38. 38.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) harder (c) the same (d) impossible
39. 39.⚖️ 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) how hard we must pull (c) number of pulleys
40. 40.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed

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