Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 151 · 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.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a spoon lifting a lid (c) a doorknob (d) a well pulley
2. 2.⚙️ Which of these is a wheel and axle? (a) a slide (b) a bottle opener (c) a steering wheel (d) a crowbar
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a magnet (c) an empty thread reel (d) a small paper cup
4. 4.⚖️ 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
5. 5.True or false: a flagpole uses a pulley. (a) True (b) False
6. 6.⚖️ 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) False (b) True
7. 7.⚖️ 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) the lifting height (c) how hard we must pull (d) number of pulleys
8. 8.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
9. 9.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
10. 10.True or false: a well pulley is a wheel and axle. (a) True (b) False
11. 11.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it might sing (d) it could fall on you
12. 12.True or false: a sloping road is a wheel and axle. (a) True (b) False
13. 13.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
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) False (b) True
15. 15.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
16. 16.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) an empty thread reel (c) a small paper cup (d) a pencil
18. 18.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
19. 19.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets wet (c) it turns blue (d) it gets longer
20. 20.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
21. 21.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) how hard we must pull (c) the lifting height (d) the same cup of coins
23. 23.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) coins as the load (d) a mirror
25. 25.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
26. 26.🇮🇳 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
27. 27.⚙️ Which of these is a lever? (a) a well pulley (b) a steering wheel (c) a spoon lifting a lid (d) a sloping road
28. 28.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) water gets lighter (c) the bucket floats (d) pulling down is easier
29. 29.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a magnet (c) an empty thread reel (d) yeast
30. 30.🧺 Which of these is not needed for the thread-reel pulley? (a) a mirror (b) coins as the load (c) a small paper cup (d) a pencil
31. 31.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) impossible (d) easier
32. 32.⚖️ 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
33. 33.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) turmeric powder (c) string (d) a mirror
34. 34.⚙️ Which simple machine is a slide? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
35. 35.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
36. 36.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) an empty thread reel (d) a magnet
37. 37.True or false: a tap handle is a wheel and axle. (a) True (b) False
38. 38.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
39. 39.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) an empty thread reel (c) a small paper cup (d) a balloon
40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) False (b) True

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