Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 894 · 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.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
3. 3.🏗️ 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
4. 4.True or false: a tap handle uses a pulley. (a) True (b) False
5. 5.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) magnet (c) battery (d) rope
6. 6.True or false: a spoon lifting a lid is an inclined plane. (a) False (b) True
7. 7.⚙️ Which of these is a lever? (a) a flagpole (b) a ramp (c) a crowbar (d) a crane
8. 8.⚖️ 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 same cup of coins
9. 9.⚙️ Which of these is a wheel and axle? (a) a slide (b) a well pulley (c) a tap handle (d) a bottle opener
10. 10.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
11. 11.🛟 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
12. 12.True or false: a crane is an inclined plane. (a) True (b) False
13. 13.🛟 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
14. 14.⚙️ Which of these is a wheel and axle? (a) a see-saw (b) a well pulley (c) a sloping road (d) a doorknob
15. 15.True or false: a crowbar uses a pulley. (a) False (b) True
16. 16.⚖️ 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
17. 17.⚖️ 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
18. 18.⚖️ 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) the same string (c) number of pulleys
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) coins as the load (d) yeast
20. 20.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
21. 21.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) double (c) the same (d) zero
22. 22.⚖️ 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) the same cup of coins (c) the same string (d) how hard we must pull
23. 23.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) yeast (d) coins as the load
24. 24.⚖️ 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 measure it (c) we keep it the same
25. 25.⚙️ Which of these uses a pulley? (a) a well pulley (b) a steering wheel (c) a ramp (d) a spoon lifting a lid
26. 26.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
27. 27.⚙️ Which simple machine is a flagpole? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
28. 28.⚖️ 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 cup of coins (c) the same string (d) number of pulleys
29. 29.⚙️ Which of these is a lever? (a) a crane (b) a flagpole (c) a sloping road (d) a bottle opener
30. 30.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) string (c) yeast (d) a magnet
31. 31.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
32. 32.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) a small paper cup (c) a pencil (d) an empty thread reel
33. 33.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
34. 34.⚖️ 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
35. 35.⚙️ Which of these is a lever? (a) a doorknob (b) a see-saw (c) a ramp (d) a sloping road
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a mirror (c) coins as the load (d) string
37. 37.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
38. 38.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the flagpole (c) on the blackboard (d) on the bench
39. 39.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
40. 40.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False

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