Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 624 · 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 simple machine is a doorknob? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
2. 2.⚖️ 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 lifting height
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
4. 4.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) string (c) a mirror (d) an empty thread reel
5. 5.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) about half (d) the same
6. 6.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
7. 7.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it can hurt your finger (c) it turns blue (d) it gets wet
8. 8.⚙️ Which of these uses a pulley? (a) a tap handle (b) a crowbar (c) a crane (d) a see-saw
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a pencil (c) a magnet (d) an empty thread reel
10. 10.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) string (c) an empty thread reel (d) a battery cell
11. 11.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) an empty thread reel (c) turmeric powder (d) yeast
12. 12.🛟 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
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) how hard we must pull (b) the same string (c) number of pulleys (d) the lifting height
14. 14.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) harder (d) easier
15. 15.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a battery cell (c) a balloon (d) a magnet
16. 16.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
17. 17.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) down (c) sideways (d) up
18. 18.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a battery cell (c) an empty thread reel (d) coins as the load
19. 19.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) True (b) False
21. 21.⚙️ Which of these uses a pulley? (a) a crowbar (b) a well pulley (c) a see-saw (d) a steering wheel
22. 22.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
23. 23.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
24. 24.True or false: a see-saw is a lever. (a) True (b) False
25. 25.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) water gets lighter (c) pulling down is easier (d) the bucket floats
26. 26.True or false: a slide is a lever. (a) True (b) False
27. 27.⚙️ Which of these is a lever? (a) a steering wheel (b) a tap handle (c) a sloping road (d) a see-saw
28. 28.⚖️ 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 measure it (b) we keep it the same (c) we change it
29. 29.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
30. 30.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a spoon lifting a lid (c) a crowbar (d) a ramp
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) turmeric powder (c) a small paper cup (d) yeast
32. 32.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) string (c) an empty thread reel (d) coins as the load
33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) True (b) False
34. 34.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
35. 35.⚙️ Which simple machine is a steering wheel? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
36. 36.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
37. 37.⚙️ Which simple machine is a flagpole? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) a pencil (c) string (d) a small paper cup
39. 39.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) number of pulleys (c) the lifting height (d) how hard we must pull
40. 40.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) battery (c) nail (d) rope

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