Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 117 · 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 simple machine is a doorknob? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
2. 2.⚙️ Which of these is a lever? (a) a tap handle (b) a sloping road (c) a bottle opener (d) a doorknob
3. 3.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) a balloon (c) a magnet (d) a mirror
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) yeast (c) a mirror (d) string
5. 5.True or false: a doorknob is an inclined plane. (a) True (b) False
6. 6.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it could fall on you (d) it might sing
7. 7.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a see-saw (c) a steering wheel (d) a sloping road
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a mirror (c) coins as the load (d) a small paper cup
9. 9.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
10. 10.⚖️ 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) number of pulleys (c) how hard we must pull (d) the lifting height
11. 11.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) an empty thread reel (d) a balloon
12. 12.⚖️ 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
13. 13.⚙️ Which of these uses a pulley? (a) a well pulley (b) a steering wheel (c) a tap handle (d) a bottle opener
14. 14.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) easier (c) impossible (d) the same
15. 15.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) a battery cell (d) a small paper cup
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) an empty thread reel (d) string
17. 17.⚖️ 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
18. 18.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) True (b) False
19. 19.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
20. 20.⚖️ 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) the same string (c) how hard we must pull (d) number of pulleys
21. 21.⚖️ 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
22. 22.⚖️ 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 keep it the same (b) we change it (c) we measure it
23. 23.True or false: a flagpole is a lever. (a) False (b) True
24. 24.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a ramp (c) a doorknob (d) a crowbar
25. 25.⚖️ 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
26. 26.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a mirror (c) a pencil (d) an empty thread reel
28. 28.True or false: a ramp is an inclined plane. (a) False (b) True
29. 29.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 5 cm (c) 20 cm (d) 40 cm
30. 30.True or false: a flagpole is an inclined plane. (a) False (b) True
31. 31.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
32. 32.⚖️ 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
33. 33.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a balloon (c) turmeric powder (d) coins as the load
34. 34.⚖️ 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) the lifting height (c) number of pulleys
35. 35.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
36. 36.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
37. 37.⚙️ Which simple machine is a bottle opener? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
38. 38.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) the same (d) about half
39. 39.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) the rope gets shorter (c) pulling down is easier (d) water gets lighter
40. 40.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True

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