Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 245 · 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 an inclined plane? (a) a see-saw (b) a sloping road (c) a flagpole (d) a bottle opener
2. 2.⚖️ 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 string (b) number of pulleys (c) the lifting height (d) the same cup of coins
3. 3.⚖️ 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
4. 4.True or false: a steering wheel is a wheel and axle. (a) False (b) True
5. 5.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
6. 6.🧺 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 balloon (d) string
7. 7.True or false: a tap handle is a lever. (a) True (b) False
8. 8.⚙️ Which of these is an inclined plane? (a) a ramp (b) a doorknob (c) a see-saw (d) a flagpole
9. 9.⚖️ 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 same string (c) number of pulleys
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) yeast (d) string
11. 11.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a magnet (c) turmeric powder (d) a small paper cup
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) a battery cell (d) string
13. 13.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
14. 14.⚙️ Which simple machine is a crane? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
15. 15.⚖️ 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) number of pulleys (c) how hard we must pull
16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
17. 17.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
18. 18.⚖️ 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) how hard we must pull (c) the same cup of coins (d) number of pulleys
19. 19.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it could fall on you (d) it is magnetic
20. 20.True or false: a slide is an inclined plane. (a) False (b) True
21. 21.⚖️ 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) True (b) False
22. 22.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) makes it magnetic (c) halves the weight (d) adds weight
23. 23.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) yeast (c) an empty thread reel (d) a small paper cup
24. 24.⚖️ 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
25. 25.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
26. 26.True or false: a sloping road is a lever. (a) False (b) True
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) an empty thread reel (c) a magnet (d) coins as the load
28. 28.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
29. 29.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) the same (c) impossible (d) easier
30. 30.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) a balloon (c) a magnet (d) a battery cell
32. 32.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
33. 33.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
34. 34.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) double (c) the same (d) about half
35. 35.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a bottle opener (c) a crane (d) a tap handle
36. 36.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) False (b) True
37. 37.True or false: a flagpole is a lever. (a) False (b) True
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a mirror (c) a magnet (d) an empty thread reel
40. 40.True or false: string is not needed for the thread-reel pulley. (a) True (b) False

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