Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 235 · 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.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) a small paper cup (c) a pencil (d) an empty thread reel
2. 2.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) turmeric powder (d) an empty thread reel
3. 3.True or false: a see-saw uses a pulley. (a) True (b) False
4. 4.⚖️ 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
5. 5.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) rope (d) magnet
6. 6.⚖️ 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 cup of coins (b) how hard we must pull (c) number of pulleys (d) the same string
7. 7.⚙️ Which simple machine is a flagpole? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
8. 8.⚙️ Which simple machine is a ramp? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
9. 9.⚙️ Which simple machine is a doorknob? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
10. 10.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a tap handle (c) a doorknob (d) a well pulley
11. 11.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) True (b) False
12. 12.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
13. 13.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a doorknob (c) a ramp (d) a bottle opener
14. 14.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) the same (c) harder (d) impossible
15. 15.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
16. 16.⚙️ Which simple machine is a crane? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
17. 17.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a battery cell (c) an empty thread reel (d) yeast
18. 18.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it can hurt your finger (c) it gets wet (d) it gets longer
19. 19.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
20. 20.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it gets hot (c) it might sing (d) it is magnetic
21. 21.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) False (b) True
23. 23.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is the one thing we change. (a) True (b) False
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same cup of coins (b) number of pulleys (c) how hard we must pull
25. 25.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
26. 26.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) water gets lighter (c) the rope gets shorter (d) pulling down is easier
27. 27.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) yeast (c) a magnet (d) coins as the load
28. 28.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
29. 29.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
30. 30.⚙️ Which of these uses a pulley? (a) a doorknob (b) a see-saw (c) a flagpole (d) a crowbar
31. 31.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) in a circle (c) up (d) down
32. 32.⚙️ Which of these is a lever? (a) a crane (b) a flagpole (c) a see-saw (d) a steering wheel
33. 33.⚖️ 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
34. 34.True or false: string is needed for the thread-reel pulley. (a) False (b) True
35. 35.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) string (c) a battery cell (d) a magnet
36. 36.⚙️ Which of these is a lever? (a) a sloping road (b) a bottle opener (c) a ramp (d) a flagpole
37. 37.True or false: a well pulley uses a pulley. (a) True (b) False
38. 38.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
39. 39.True or false: a slide is an inclined plane. (a) True (b) False
40. 40.⚖️ 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 lifting height (c) how hard we must pull (d) number of pulleys

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