Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 186 · 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.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
2. 2.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) turmeric powder (c) a magnet (d) a balloon
3. 3.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it gets wet (c) it can hurt your finger (d) it turns blue
4. 4.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a bottle opener (c) a slide (d) a doorknob
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) turmeric powder (c) a small paper cup (d) an empty thread reel
6. 6.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
7. 7.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) coins as the load (c) a pencil (d) a battery cell
8. 8.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
9. 9.⚙️ Which of these is a lever? (a) a well pulley (b) a crane (c) a bottle opener (d) a doorknob
10. 10.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) coins as the load (c) a small paper cup (d) a mirror
12. 12.⚖️ 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
13. 13.⚙️ Which of these is a wheel and axle? (a) a steering wheel (b) a sloping road (c) a slide (d) a well pulley
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is what we measure. (a) True (b) False
15. 15.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) a small paper cup (c) a pencil (d) an empty thread reel
16. 16.⚖️ 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
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) a magnet (d) a pencil
18. 18.⚖️ 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) the same cup of coins (d) number of pulleys
19. 19.True or false: a slide is a lever. (a) True (b) False
20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) number of pulleys (c) the same cup of coins (d) how hard we must pull
21. 21.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a small paper cup (c) a magnet (d) a balloon
22. 22.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
23. 23.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
24. 24.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we keep it the same (b) we measure it (c) we change it
26. 26.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it might sing (c) it gets hot (d) it could fall on you
27. 27.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) an empty thread reel (c) a magnet (d) a balloon
28. 28.True or false: a tap handle is a wheel and axle. (a) False (b) True
29. 29.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a sloping road (c) a crane (d) a see-saw
30. 30.⚖️ 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 change it (b) we keep it the same (c) we measure it
31. 31.⚙️ Which simple machine is a doorknob? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
32. 32.True or false: a well pulley uses a pulley. (a) False (b) True
33. 33.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
34. 34.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a doorknob (c) a slide (d) a well pulley
35. 35.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) yeast (d) a pencil
36. 36.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
37. 37.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
38. 38.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) on the blackboard (c) in the tap (d) on the flagpole
39. 39.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) zero (d) about half
40. 40.True or false: a steering wheel is an inclined plane. (a) True (b) False

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