Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 528 · 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 never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it might sing (d) it could fall on you
2. 2.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) an empty thread reel (d) turmeric powder
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a small paper cup (c) coins as the load (d) an empty thread reel
4. 4.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a well pulley (c) a ramp (d) a crane
5. 5.⚙️ Which of these uses a pulley? (a) a crane (b) a sloping road (c) a bottle opener (d) a see-saw
6. 6.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
7. 7.⚖️ 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
8. 8.True or false: a slide is an inclined plane. (a) False (b) True
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) a small paper cup (d) a mirror
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) a pencil (d) yeast
11. 11.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) True (b) False
12. 12.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 10 cm (c) 20 cm (d) 40 cm
13. 13.⚖️ 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) the same cup of coins (c) number of pulleys (d) how hard we must pull
14. 14.⚙️ Which of these is an inclined plane? (a) a ramp (b) a steering wheel (c) a tap handle (d) a bottle opener
15. 15.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) the same (d) easier
16. 16.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
17. 17.⚖️ 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 same string
18. 18.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) coins as the load (c) a magnet (d) string
19. 19.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a well pulley (c) a crowbar (d) a sloping road
20. 20.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it gets wet (c) it can hurt your finger (d) it turns blue
21. 21.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a mirror (c) string (d) yeast
22. 22.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
23. 23.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
24. 24.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
25. 25.⚙️ Which of these uses a pulley? (a) a see-saw (b) a flagpole (c) a crowbar (d) a sloping road
26. 26.True or false: a spoon lifting a lid is an inclined plane. (a) False (b) True
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) the lifting height (c) the same string (d) how hard we must pull
28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) coins as the load (d) turmeric powder
29. 29.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) rope (c) battery (d) nail
30. 30.True or false: a crowbar is a wheel and axle. (a) True (b) False
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) a battery cell (d) a pencil
32. 32.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
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: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
35. 35.True or false: a crowbar uses a pulley. (a) False (b) True
36. 36.⚖️ 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
37. 37.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) an empty thread reel (c) yeast (d) turmeric powder
38. 38.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
39. 39.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
40. 40.🧺 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 balloon (d) an empty thread reel

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