Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 801 · 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 not needed for the thread-reel pulley? (a) coins as the load (b) string (c) an empty thread reel (d) a magnet
2. 2.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it is magnetic (d) it could fall on you
3. 3.True or false: a spoon lifting a lid uses a pulley. (a) True (b) False
4. 4.⚖️ 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) False (b) True
5. 5.True or false: a bottle opener is a lever. (a) True (b) False
6. 6.True or false: a steering wheel is a lever. (a) True (b) False
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a mirror (c) string (d) an empty thread reel
9. 9.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) coins as the load (d) turmeric powder
11. 11.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) magnet (c) rope (d) nail
12. 12.⚙️ Which simple machine is a crowbar? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
15. 15.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
16. 16.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
17. 17.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it turns blue (d) it can hurt your finger
18. 18.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) coins as the load (c) a magnet (d) string
19. 19.⚖️ 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 change it (b) we measure it (c) we keep it the same
20. 20.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) easier (c) impossible (d) the same
21. 21.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
22. 22.⚙️ Which of these is an inclined plane? (a) a doorknob (b) a crane (c) a tap handle (d) a sloping road
23. 23.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a well pulley (c) a slide (d) a flagpole
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a balloon (c) an empty thread reel (d) a magnet
25. 25.⚙️ Which simple machine is a slide? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
26. 26.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) a battery cell (d) string
27. 27.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) a battery cell (c) yeast (d) a magnet
28. 28.⚖️ 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
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) the lifting height (c) the same cup of coins (d) how hard we must pull
30. 30.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
31. 31.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a pencil (c) yeast (d) a small paper cup
32. 32.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
33. 33.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
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) the lifting height (c) number of pulleys (d) how hard we must pull
35. 35.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
36. 36.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) in the tap (c) on the bench (d) on the flagpole
37. 37.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) a small paper cup (d) a balloon
39. 39.⚙️ Which of these uses a pulley? (a) a doorknob (b) a tap handle (c) a ramp (d) a well pulley
40. 40.⚙️ Which simple machine is a well pulley? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever

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