Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 582 · 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 crane? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
2. 2.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
3. 3.True or false: string is needed for the thread-reel pulley. (a) False (b) True
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) yeast (d) a small paper cup
5. 5.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it turns blue (c) it gets longer (d) it can hurt your finger
6. 6.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) sideways (c) down (d) up
7. 7.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
8. 8.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
9. 9.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
10. 10.⚙️ Which simple machine is a tap handle? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
11. 11.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
12. 12.True or false: a bottle opener uses a pulley. (a) True (b) False
13. 13.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) False (b) True
14. 14.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a magnet (c) an empty thread reel (d) a balloon
15. 15.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
16. 16.True or false: a ramp is an inclined plane. (a) True (b) False
17. 17.⚖️ 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 string (b) number of pulleys (c) how hard we must pull (d) the same cup of coins
18. 18.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
19. 19.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) rope (c) battery (d) magnet
20. 20.⚖️ 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 lifting height
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
23. 23.⚖️ 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) the same string (c) how hard we must pull
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) string (c) a magnet (d) turmeric powder
25. 25.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
26. 26.True or false: a magnet is not needed for the thread-reel pulley. (a) True (b) False
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) True (b) False
28. 28.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) a balloon (c) a magnet (d) turmeric powder
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.⚖️ 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
31. 31.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) True (b) False
32. 32.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 20 cm (c) 40 cm (d) 5 cm
33. 33.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it might sing (c) it could fall on you (d) it gets hot
34. 34.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
35. 35.⚙️ Which simple machine is a bottle opener? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
36. 36.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a magnet (c) an empty thread reel (d) coins as the load
37. 37.🏗️ Why is a pulley used to lift water from a deep well? (a) pulling down is easier (b) water gets lighter (c) the rope gets shorter (d) the bucket floats
38. 38.⚖️ 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 change it (b) we keep it the same (c) we measure it
39. 39.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a battery cell (c) coins as the load (d) a small paper cup
40. 40.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed

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