Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 292 · 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 tap handle is a wheel and axle. (a) True (b) False
2. 2.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a mirror (c) a small paper cup (d) a pencil
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) an empty thread reel (c) a small paper cup (d) coins as the load
4. 4.⚖️ 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
5. 5.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) in a circle (c) down (d) sideways
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) string (d) yeast
7. 7.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
8. 8.⚖️ 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
9. 9.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
10. 10.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
11. 11.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we keep it the same (c) we measure it
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) an empty thread reel (d) a mirror
13. 13.⚙️ Which of these is a wheel and axle? (a) a crane (b) a sloping road (c) a see-saw (d) a tap handle
14. 14.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
15. 15.True or false: a doorknob is a lever. (a) False (b) True
16. 16.⚙️ Which of these uses a pulley? (a) a spoon lifting a lid (b) a well pulley (c) a bottle opener (d) a sloping road
17. 17.True or false: string is needed for the thread-reel pulley. (a) False (b) True
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.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
20. 20.⚙️ Which of these is a lever? (a) a well pulley (b) a slide (c) a sloping road (d) a see-saw
21. 21.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
22. 22.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) an empty thread reel (c) a battery cell (d) a pencil
23. 23.⚖️ 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
24. 24.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) rope (c) magnet (d) nail
25. 25.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it might sing (c) it is magnetic (d) it could fall on you
26. 26.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
27. 27.⚙️ Which simple machine is a sloping road? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
28. 28.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a sloping road (c) a see-saw (d) a spoon lifting a lid
29. 29.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
30. 30.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) coins as the load (c) a balloon (d) turmeric powder
31. 31.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a crane (c) a steering wheel (d) a spoon lifting a lid
32. 32.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) makes it magnetic (c) changes pull direction (d) halves the weight
33. 33.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) double (c) zero (d) the same
34. 34.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same string (b) number of pulleys (c) how hard we must pull
35. 35.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
36. 36.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) turmeric powder (c) an empty thread reel (d) a balloon
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) how hard we must pull (b) the lifting height (c) the same string (d) number of pulleys
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 change it (c) we measure it
39. 39.⚖️ 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) the lifting height (c) number of pulleys (d) the same cup of coins
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) string (c) a balloon (d) a pencil

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