Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 451 · 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 kept the same. (a) True (b) False
2. 2.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a mirror (c) coins as the load (d) yeast
3. 3.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it might sing (c) it could fall on you (d) it is magnetic
4. 4.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a balloon (c) a small paper cup (d) an empty thread reel
6. 6.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “how hard we must pull”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
8. 8.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) True (b) False
9. 9.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the blackboard (c) in the tap (d) on the bench
10. 10.⚖️ 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
11. 11.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
12. 12.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a battery cell (c) a pencil (d) string
13. 13.True or false: a slide is a lever. (a) True (b) False
14. 14.⚙️ Which of these uses a pulley? (a) a doorknob (b) a spoon lifting a lid (c) a crane (d) a ramp
15. 15.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) down (c) in a circle (d) sideways
16. 16.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
17. 17.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) number of pulleys (c) how hard we must pull (d) the same string
18. 18.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
19. 19.True or false: a flagpole uses a pulley. (a) True (b) False
20. 20.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it turns blue (c) it can hurt your finger (d) it gets longer
21. 21.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) changes pull direction (c) halves the weight (d) makes it magnetic
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is what we measure. (a) True (b) False
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) yeast (c) an empty thread reel (d) a small paper cup
24. 24.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) magnet (d) rope
25. 25.⚙️ Which of these uses a pulley? (a) a well pulley (b) a tap handle (c) a crowbar (d) a ramp
26. 26.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) easier (d) impossible
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a pencil (c) a magnet (d) an empty thread reel
28. 28.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) turmeric powder (c) a small paper cup (d) a battery cell
29. 29.⚖️ 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 measure it (b) we keep it the same (c) we change it
30. 30.True or false: a bottle opener is a wheel and axle. (a) False (b) True
31. 31.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) water gets lighter (c) the rope gets shorter (d) pulling down is easier
32. 32.⚙️ Which simple machine is a spoon lifting a lid? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) False (b) True
34. 34.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
35. 35.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 5 cm (c) 10 cm (d) 20 cm
36. 36.⚙️ Which of these is an inclined plane? (a) a ramp (b) a well pulley (c) a bottle opener (d) a spoon lifting a lid
37. 37.⚖️ 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) number of pulleys (c) how hard we must pull (d) the same string
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) False (b) True
40. 40.True or false: a see-saw is a lever. (a) False (b) True

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