Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 286 · 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.True or false: a spoon lifting a lid is a lever. (a) True (b) False
2. 2.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
3. 3.⚖️ 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) number of pulleys (c) the lifting height
4. 4.True or false: a ramp is an inclined plane. (a) False (b) True
5. 5.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) about half (c) zero (d) double
6. 6.⚖️ 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
7. 7.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it can hurt your finger (c) it gets wet (d) it gets longer
8. 8.True or false: a doorknob is a lever. (a) False (b) True
9. 9.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it gets hot (d) it might sing
10. 10.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
11. 11.⚖️ 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) the same cup of coins (c) how hard we must pull
12. 12.⚙️ Which of these uses a pulley? (a) a tap handle (b) a see-saw (c) a flagpole (d) a sloping road
13. 13.True or false: a slide is an inclined plane. (a) False (b) True
14. 14.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
15. 15.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
16. 16.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) the same (c) harder (d) easier
17. 17.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
18. 18.⚙️ Which of these uses a pulley? (a) a see-saw (b) a spoon lifting a lid (c) a crane (d) a sloping road
19. 19.⚖️ 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 change it (b) we measure it (c) we keep it the same
20. 20.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) string (c) a battery cell (d) a pencil
21. 21.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
22. 22.⚖️ 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) False (b) True
23. 23.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) in a circle (c) up (d) sideways
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) turmeric powder (c) a small paper cup (d) an empty thread reel
25. 25.⚙️ Which of these is a lever? (a) a flagpole (b) a crowbar (c) a steering wheel (d) a tap handle
26. 26.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) string (d) a balloon
27. 27.True or false: a see-saw uses a pulley. (a) False (b) True
28. 28.True or false: a bottle opener is a lever. (a) False (b) True
29. 29.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a balloon (c) an empty thread reel (d) a pencil
30. 30.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
31. 31.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
32. 32.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) turmeric powder (d) an empty thread reel
33. 33.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
34. 34.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) string (c) a mirror (d) an empty thread reel
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the lifting height (b) the same cup of coins (c) the same string (d) number of pulleys
36. 36.⚖️ 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
37. 37.⚙️ Which simple machine is a well pulley? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
38. 38.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
39. 39.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a mirror (c) an empty thread reel (d) yeast
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) an empty thread reel (d) yeast

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