Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 718 · 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 uses a pulley? (a) a crane (b) a crowbar (c) a bottle opener (d) a sloping road
2. 2.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
3. 3.⚙️ Which simple machine is a see-saw? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
4. 4.⚖️ 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) how hard we must pull (c) number of pulleys (d) the same string
5. 5.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
6. 6.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it is magnetic (c) it gets hot (d) it might sing
7. 7.⚙️ Which simple machine is a well pulley? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
8. 8.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
9. 9.⚙️ Which of these uses a pulley? (a) a tap handle (b) a slide (c) a ramp (d) a flagpole
10. 10.True or false: a slide is an inclined plane. (a) True (b) False
11. 11.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) a pencil (d) yeast
12. 12.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
13. 13.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a ramp (c) a spoon lifting a lid (d) a doorknob
14. 14.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
15. 15.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) zero (d) about half
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) a pencil (c) coins as the load (d) an empty thread reel
17. 17.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) the lifting height (c) the same cup of coins (d) how hard we must pull
18. 18.⚖️ 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
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) coins as the load (d) a balloon
20. 20.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) a small paper cup (c) an empty thread reel (d) string
21. 21.⚙️ Which of these is a lever? (a) a well pulley (b) a tap handle (c) a crane (d) a bottle opener
22. 22.⚙️ Which of these is a lever? (a) a flagpole (b) a crane (c) a sloping road (d) a crowbar
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a battery cell (c) an empty thread reel (d) string
24. 24.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
25. 25.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a sloping road (c) a see-saw (d) a steering wheel
26. 26.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a mirror (c) yeast (d) a battery cell
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) False (b) True
28. 28.⚖️ 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
29. 29.True or false: a crowbar is a wheel and axle. (a) False (b) True
30. 30.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) yeast (c) turmeric powder (d) a small paper cup
31. 31.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) False (b) True
34. 34.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a bottle opener (c) a flagpole (d) a tap handle
35. 35.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) rope (d) magnet
36. 36.⚖️ 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 keep it the same (b) we change it (c) we measure it
37. 37.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) an empty thread reel (c) a pencil (d) string
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a small paper cup (c) string (d) a magnet
39. 39.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
40. 40.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a well pulley (c) a crowbar (d) a slide

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