Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 535 · 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) an empty thread reel (b) a pencil (c) yeast (d) coins as the load
2. 2.⚖️ 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) True (b) False
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) a balloon (d) an empty thread reel
4. 4.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
5. 5.🧺 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) a pencil (d) a mirror
6. 6.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) down (c) in a circle (d) sideways
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) yeast (c) a pencil (d) coins as the load
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) turmeric powder (c) a small paper cup (d) an empty thread reel
10. 10.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) water gets lighter (c) pulling down is easier (d) the rope gets shorter
11. 11.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it turns blue (c) it can hurt your finger (d) it gets longer
12. 12.⚙️ Which simple machine is a crowbar? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
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) number of pulleys (b) the same cup of coins (c) the lifting height (d) how hard we must pull
14. 14.⚙️ Which simple machine is a flagpole? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
15. 15.🧺 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) a battery cell (d) a pencil
16. 16.⚖️ 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
17. 17.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
18. 18.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
19. 19.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) yeast (c) string (d) a battery cell
20. 20.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) harder (c) the same (d) impossible
21. 21.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
22. 22.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
23. 23.⚙️ Which of these uses a pulley? (a) a see-saw (b) a bottle opener (c) a ramp (d) a crane
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a small paper cup (c) a magnet (d) a battery cell
25. 25.True or false: a ramp uses a pulley. (a) True (b) False
26. 26.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a crowbar (c) a steering wheel (d) a slide
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.🧺 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 magnet (d) string
29. 29.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) nail (c) rope (d) battery
30. 30.⚖️ 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
31. 31.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it might sing (c) it gets hot (d) it is magnetic
32. 32.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is kept the same. (a) False (b) True
35. 35.⚖️ 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
36. 36.True or false: a tap handle is an inclined plane. (a) True (b) False
37. 37.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) double (d) about half
38. 38.🧺 Which of these is not needed for the thread-reel pulley? (a) a mirror (b) an empty thread reel (c) a small paper cup (d) coins as the load
39. 39.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) turmeric powder (c) an empty thread reel (d) coins as the load
40. 40.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a pencil (c) a small paper cup (d) a battery cell

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