Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 767 · 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? Which of these is what we measure? (a) the lifting height (b) number of pulleys (c) the same cup of coins (d) how hard we must pull
2. 2.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a balloon (c) a small paper cup (d) coins as the load
4. 4.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
5. 5.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a crane (c) a sloping road (d) a see-saw
6. 6.True or false: a flagpole uses a pulley. (a) False (b) True
7. 7.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) turmeric powder (d) coins as the load
8. 8.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same cup of coins (b) how hard we must pull (c) number of pulleys
9. 9.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a balloon (c) a small paper cup (d) turmeric powder
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) coins as the load (d) a small paper cup
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a pencil (c) a magnet (d) a small paper cup
12. 12.⚙️ Which of these is a lever? (a) a doorknob (b) a slide (c) a steering wheel (d) a bottle opener
13. 13.True or false: a doorknob is an inclined plane. (a) True (b) False
14. 14.⚙️ Which of these uses a pulley? (a) a flagpole (b) a spoon lifting a lid (c) a ramp (d) a sloping road
15. 15.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets longer (c) it can hurt your finger (d) it gets wet
16. 16.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
17. 17.True or false: a crane is a wheel and axle. (a) True (b) False
18. 18.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) an empty thread reel (d) a battery cell
19. 19.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
20. 20.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the bench (c) in the tap (d) on the flagpole
21. 21.⚖️ 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
22. 22.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
23. 23.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) True (b) False
24. 24.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) how hard we must pull (b) number of pulleys (c) the lifting height (d) the same string
26. 26.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) an empty thread reel (c) a battery cell (d) coins as the load
28. 28.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
29. 29.⚖️ 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
30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) a mirror (d) a pencil
31. 31.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is the one thing we change. (a) True (b) False
32. 32.⚖️ 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
33. 33.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) an empty thread reel (c) string (d) a balloon
34. 34.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) a magnet (d) coins as the load
35. 35.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it gets hot (c) it is magnetic (d) it might sing
36. 36.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a pencil (c) turmeric powder (d) a magnet
37. 37.⚖️ 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
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) True (b) False
39. 39.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the lifting height (b) how hard we must pull (c) number of pulleys
40. 40.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a tap handle (c) a spoon lifting a lid (d) a well pulley

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