Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 494 · 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 of these is not needed for the thread-reel pulley? (a) string (b) a balloon (c) a pencil (d) coins as the load
2. 2.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
3. 3.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) yeast (d) an empty thread reel
4. 4.True or false: a slide is an inclined plane. (a) True (b) False
5. 5.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a mirror (c) an empty thread reel (d) string
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) an empty thread reel (d) a balloon
7. 7.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it gets hot (d) it might sing
8. 8.⚖️ 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) how hard we must pull (c) the same cup of coins (d) the lifting height
9. 9.True or false: a sloping road is an inclined plane. (a) False (b) True
10. 10.⚖️ 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) False (b) True
11. 11.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
12. 12.⚖️ 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
13. 13.⚖️ 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) False (b) True
14. 14.True or false: a ramp is a wheel and axle. (a) True (b) False
15. 15.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
16. 16.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
17. 17.True or false: a see-saw is a lever. (a) True (b) False
18. 18.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a see-saw (c) a well pulley (d) a doorknob
19. 19.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
20. 20.True or false: a bottle opener is a wheel and axle. (a) True (b) False
21. 21.⚖️ 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 measure it (c) we keep it the same
22. 22.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it can hurt your finger (d) it gets wet
23. 23.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) coins as the load (c) string (d) a pencil
24. 24.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) double (c) about half (d) zero
25. 25.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the bench (c) in the tap (d) on the flagpole
26. 26.⚖️ 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) False (b) True
27. 27.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) a magnet (d) an empty thread reel
29. 29.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
30. 30.⚖️ 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) how hard we must pull (d) the lifting height
31. 31.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a slide (c) a see-saw (d) a crowbar
32. 32.⚙️ Which simple machine is a flagpole? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
33. 33.⚖️ 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 change it (c) we keep it the same
34. 34.⚖️ 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
35. 35.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
36. 36.⚙️ Which of these uses a pulley? (a) a doorknob (b) a see-saw (c) a steering wheel (d) a flagpole
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) False (b) True
38. 38.True or false: a bottle opener is an inclined plane. (a) True (b) False
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.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True

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