Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 683 · 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 is magnetic (b) it gets hot (c) it might sing (d) it could fall on you
2. 2.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) a pencil (c) coins as the load (d) a small paper cup
3. 3.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
4. 4.⚖️ 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
5. 5.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
6. 6.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
7. 7.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
8. 8.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
9. 9.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) coins as the load (d) a battery cell
11. 11.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
12. 12.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) harder (c) the same (d) impossible
13. 13.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) magnet (c) battery (d) nail
14. 14.⚖️ 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
15. 15.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) coins as the load (d) turmeric powder
16. 16.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a crane (c) a slide (d) a doorknob
17. 17.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) double (d) about half
18. 18.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) True (b) False
20. 20.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) the rope gets shorter (c) water gets lighter (d) pulling down is easier
21. 21.True or false: a sloping road is an inclined plane. (a) True (b) False
22. 22.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) turmeric powder (c) a balloon (d) string
23. 23.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
24. 24.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) in a circle (c) down (d) up
25. 25.True or false: a spoon lifting a lid is a lever. (a) False (b) True
26. 26.⚖️ 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
27. 27.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a balloon (c) a battery cell (d) a small paper cup
28. 28.True or false: a spoon lifting a lid is a wheel and axle. (a) False (b) True
29. 29.⚖️ 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) the same string (c) number of pulleys (d) how hard we must pull
30. 30.⚖️ 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 keep it the same (c) we change it
31. 31.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
32. 32.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a see-saw (c) a bottle opener (d) a flagpole
33. 33.True or false: a spoon lifting a lid is an inclined plane. (a) True (b) False
34. 34.⚖️ 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
35. 35.True or false: a bottle opener is an inclined plane. (a) False (b) True
36. 36.True or false: a see-saw is an inclined plane. (a) True (b) False
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same cup of coins”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
39. 39.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) True (b) False
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) coins as the load (c) string (d) a pencil

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