Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 671 · 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.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it gets wet (c) it turns blue (d) it can hurt your finger
2. 2.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) battery (c) rope (d) nail
3. 3.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) about half (c) the same (d) double
4. 4.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a ramp (c) a see-saw (d) a crane
5. 5.True or false: a crowbar is an inclined plane. (a) False (b) True
6. 6.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) the same (c) harder (d) impossible
7. 7.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) yeast (c) string (d) a mirror
8. 8.⚖️ 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) True (b) False
9. 9.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
10. 10.⚖️ 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
11. 11.⚙️ Which of these uses a pulley? (a) a sloping road (b) a spoon lifting a lid (c) a flagpole (d) a tap handle
12. 12.True or false: a sloping road is an inclined plane. (a) False (b) True
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) coins as the load (c) turmeric powder (d) string
14. 14.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
15. 15.True or false: a tap handle is an inclined plane. (a) False (b) True
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) coins as the load (d) a battery cell
17. 17.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) coins as the load (c) a balloon (d) a pencil
18. 18.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
19. 19.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
20. 20.🏗️ 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
21. 21.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) string (c) an empty thread reel (d) turmeric powder
22. 22.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
23. 23.⚙️ Which of these is a lever? (a) a steering wheel (b) a crowbar (c) a slide (d) a flagpole
24. 24.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
25. 25.⚖️ 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) False (b) True
26. 26.True or false: a see-saw is an inclined plane. (a) True (b) False
27. 27.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a bottle opener (c) a flagpole (d) a slide
28. 28.⚖️ 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) how hard we must pull (c) the same cup of coins (d) the lifting height
29. 29.⚙️ Which simple machine is a tap handle? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
30. 30.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) yeast (d) a small paper cup
32. 32.⚖️ 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 cup of coins (c) number of pulleys
33. 33.⚖️ 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
34. 34.True or false: a steering wheel is an inclined plane. (a) False (b) True
35. 35.True or false: a see-saw is a wheel and axle. (a) True (b) False
36. 36.⚖️ 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
37. 37.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) an empty thread reel (c) a mirror (d) a magnet
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) False (b) True
39. 39.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
40. 40.⚙️ Which simple machine is a ramp? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle

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