Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 153 · 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? What do we do with “the same cup of coins”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) a pencil (d) a magnet
4. 4.🏗️ Why is a pulley used to lift water from a deep well? (a) pulling down is easier (b) the bucket floats (c) the rope gets shorter (d) water gets lighter
5. 5.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True
8. 8.⚙️ Which of these is a wheel and axle? (a) a steering wheel (b) a crane (c) a bottle opener (d) a see-saw
9. 9.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
10. 10.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a bottle opener (c) a doorknob (d) a spoon lifting a lid
11. 11.True or false: a ramp is an inclined plane. (a) True (b) False
12. 12.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) sideways (c) up (d) down
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a battery cell (c) coins as the load (d) an empty thread reel
14. 14.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
15. 15.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it gets hot (c) it might sing (d) it is magnetic
16. 16.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) string (d) a balloon
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) yeast (d) an empty thread reel
18. 18.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) battery (c) rope (d) nail
19. 19.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) the same (c) harder (d) easier
20. 20.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a slide (c) a flagpole (d) a tap handle
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) coins as the load (d) a balloon
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) False (b) True
23. 23.⚖️ 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
24. 24.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a tap handle (c) a ramp (d) a see-saw
25. 25.⚖️ 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
26. 26.🛟 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
27. 27.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) coins as the load (d) a mirror
28. 28.True or false: a bottle opener is a wheel and axle. (a) True (b) False
29. 29.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) zero (c) about half (d) double
30. 30.⚙️ Which of these uses a pulley? (a) a tap handle (b) a doorknob (c) a flagpole (d) a spoon lifting a lid
31. 31.True or false: a crowbar is an inclined plane. (a) True (b) False
32. 32.🔮 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
33. 33.True or false: a steering wheel is a wheel and axle. (a) False (b) True
34. 34.⚖️ 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) number of pulleys (c) the lifting height (d) the same string
35. 35.True or false: a tap handle is a wheel and axle. (a) True (b) False
36. 36.True or false: a slide is a wheel and axle. (a) True (b) False
37. 37.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the blackboard (c) on the flagpole (d) on the bench
38. 38.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) yeast (c) turmeric powder (d) a magnet
39. 39.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
40. 40.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) halves the weight (c) adds weight (d) changes pull direction

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