Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 330 · 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.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
2. 2.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a battery cell (c) a balloon (d) a small paper cup
3. 3.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
4. 4.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a battery cell (c) a pencil (d) coins as the load
6. 6.⚙️ Which simple machine is a ramp? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
7. 7.⚖️ 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 measure it (b) we keep it the same (c) we change it
8. 8.True or false: a see-saw is a wheel and axle. (a) False (b) True
9. 9.⚖️ 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) the same cup of coins (d) how hard we must pull
10. 10.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) the same (c) impossible (d) easier
11. 11.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) about half (d) zero
12. 12.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
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 change it (b) we keep it the same (c) we measure it
14. 14.⚖️ 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
15. 15.⚖️ 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
16. 16.⚙️ Which of these uses a pulley? (a) a tap handle (b) a sloping road (c) a flagpole (d) a ramp
17. 17.⚙️ Which of these is a wheel and axle? (a) a crane (b) a well pulley (c) a tap handle (d) a flagpole
18. 18.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) number of pulleys (b) how hard we must pull (c) the same cup of coins
19. 19.⚖️ 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 same string (c) number of pulleys (d) how hard we must pull
20. 20.True or false: a spoon lifting a lid is a wheel and axle. (a) True (b) False
21. 21.⚙️ Which simple machine is a bottle opener? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
22. 22.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
23. 23.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) turmeric powder (d) coins as the load
24. 24.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the bench (c) in the tap (d) on the blackboard
25. 25.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) a balloon (d) a small paper cup
26. 26.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
27. 27.True or false: a doorknob uses a pulley. (a) True (b) False
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) True (b) False
29. 29.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a pencil (c) string (d) coins as the load
30. 30.⚖️ 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
31. 31.🏗️ Why is a pulley used to lift water from a deep well? (a) pulling down is easier (b) the rope gets shorter (c) water gets lighter (d) the bucket floats
32. 32.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
33. 33.True or false: a doorknob is an inclined plane. (a) False (b) True
34. 34.True or false: a spoon lifting a lid is a lever. (a) True (b) False
35. 35.True or false: a steering wheel is a wheel and axle. (a) False (b) True
36. 36.True or false: a crane is an inclined plane. (a) True (b) False
37. 37.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
38. 38.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
39. 39.⚙️ Which of these is a lever? (a) a see-saw (b) a crane (c) a well pulley (d) a slide
40. 40.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed

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